International Maths Olympiad Forum By SOF Olympiad Trainer - Page 714
  1. Home
  2. /  Forum

User Forum

Ask Your Question
PRANEEL PRIYASH PANDA from AECS NARORA, BULANDSHAHR
Subject :IMO    Class : Class 6

Post Your Answer

PRANEEL PRIYASH PANDA from AECS NARORA, BULANDSHAHR
Subject :IMO    Class : Class 6

Post Your Answer

Pranav Arun from garib school, Mumbai
Subject :IMO    Class : Class 6

Ans 1:

Prajwal Thakur from South Point High School, Kolkata
Class : Class 9
THE ANSWER SHOULD BE (B) PLEASE VERIFY SOF!!!!

Ans 2:

Suhani sharma from Delhi public school, Chandigarh
Class : Class 6
Ans c only makes sense

Ans 3:

satwik patnaik from DPS Rourkela, Rourkela
Class : Class 7
Answer should be C

Ans 4:

Devasree from Presidium, Ghaziabad
Class : Class 10
answer should be c

Ans 5:

Sadhika Naorem from Army Public School Narangi, Guwahati
Class : Class 10

Ans 6:

Hritvi from Podar International School, Mumbai
Class : Class 7
the answer is C.. B is the wrong answer . if we have to move the digits from left to right we should multiply and not divide.. please clarify SOF..

Ans 7:

Ritabrata Das from OPJS, Angul
Class : Class 7
ans should be C

Ans 8:

student from school, city
Class : Class 10
The answer is (c)

Ans 9:

Chaitanya L K from SKCHEC, bangalore
Class : Class 8
ans. should be [C].

Ans 10:

Shivangi Shivu Singh from Pawar Public School Chandivali , Mumbai
Class : Class 8
c

Ans 11:

Riyan from Delhi Public School Kajaguda , Hyderabad
Class : Class 7
Cccc!

Ans 12:

ARYAN AGRAWAL from NPS KORAMANGALA, BANALORE
Class : Class 8
it should be B as it is decreased by not increased if it was increased than it was 10

Ans 13:

Arnav Raj Sharma from GEMS International School the ultra master mega, Gurgaon
Class : Class 7
decreasing by 1/10 is not possible . the answer should be (c)

Ans 14:

Omkar Deshmukh from phoenix greens international school, Hyderabad
Class : Class 7
ans should be c

Ans 15:

Soujanya Boyanapally from ,
Class : Class 5
correct ans. should be C

Ans 16:

Priyam Bhattacharya from cambridge court high school, jaipur
Class : Class 6
c

Ans 17:

Ashwak from Cambridge, Jalandhar
Class : Class 9
The answer is B cause they are saying step by step from LEFT to RIGHT that means it is increasing but as they have said decreasing the answer is B . eg- 10 increases by 10 when it goes from tens to hundred. So it decreases by this formula - 10 divided by 1/10 ( dividing a whole number by a fraction = whole number X the reciprocal of the fraction) = 10x10 = 100

Ans 18:

Yashraj from pps, pune
Class : Class 6
My explaination is when we decrease a number by 1/10 times example 100 / 1/10 = 1000 so it increases by 10. If in place of decrease it was increase then b would be the answer but actual answer is c.

Ans 19:

Sumit Biswal from Dps gandhinagar, Gandhinagar
Class : Class 7
Answer should be C

Ans 20:

Ashwak from Cambridge, Jalandhar
Class : Class 9
Its C

Ans 21:

Anshujit Kumar Saha from Garden High School, Kolkata
Class : Class 8
Decreases means division and increases means multiplication.Over here it says decreases and therefore it is division.For example let us take 100.(B) 100/ 1/10 = 100 * 10 = 1000(C)100/10 = 10Therefore,C is correct as 1 moves from left to right.

Ans 22:

Aryan Mahanty from Delhi Public School, bangalore
Class : Class 6
The and should be C

Ans 23:

Navya from Gyanshree, Noida
Class : Class 6
Ans is C, the most sigma

Ans 24:

Ishitadas from Adamas World school , Ichapur
Class : Class 8

Ans 25:

Sreejani Bhaduri from National Public School, Bangalore
Class : Class 10
c

Ans 26:

SKIyer from CNS, Mumbai
Class : Class 6
Ans is (c).

Ans 27:

Shivyanshi from Salwan Public School, Gurugram Haryana
Class : Class 9
in synopsis its given that the place value decreases by 10

Ans 28:

from , patna
Class : Class 6
the correct answer is [B] because if we take a no. as 10.ok.then i am doing like example see- 10X1/10 so it is =1 so it decreased

Ans 29:

ADITYA LAL from MOUNT CARMEL SR SEC SCHOOL, UNA, HP
Class : Class 6
how can it decrease by 1/10. it changes by 1/10 and decreases by 10 times answer should be C

Ans 30:

Hari Govind from Delhi Public School Chandigarh , Chandigarh
Class : Class 6
the answer should be option C

Ans 31:

Hamsavarshini Swaminathan from St Anns Senior Secondary School, Roorkee
Class : Class 10
answer is bwhen we move from left to rightexample-1000 to 100how do you get 100 by dividing it by 10 right?i.e 1000/10 = 100answer = 1/10

Ans 32:

SHIRIN BHATTACHARYYA from St. Joseph's Convent School, KHANDWA
Class : Class 10

Ans 33:

Vivaan Kumar from Heritage Xperiential Learning School, Gurgaon
Class : Class 8
The correct answer is (C) because the question asks you by how many times it is DECREASING from LEFT TO RIGHT . If it said increasing, then the answer would be (B)

Ans 34:

Aaditva from Vasant Valley School, New Delhi
Class : Class 8
C

Ans 35:

DEVAANGANA SARDAR from G.D. Birla Centre for Education, Kolkata
Class : Class 7
Remember LEFT TO RIGHT

Ans 36:

Ashwak from Cambridge, Jalandhar
Class : Class 9
I think answer is B.....as we have to divide the digit by number 10 each time we move from left to right .....and so its value decreases eg 500 is divided by 10 (500*1/10 = 50) to make its place value from hundred to tens

Ans 37:

Aryan Keswani from Delhi Public School, Mathura Road, New Delhi
Class : Class 10

Ans 38:

Bharat from Geetanjali Olympiad school, Bangalore
Class : Class 9
and should be c

Ans 39:

Ashwak from Cambridge, Jalandhar
Class : Class 9
THE ANSWER IS - B

Ans 40:

Shreyas K from Kennedy High The Global School, Hyderabad
Class : Class 9
As he is saying times, it should be 10 and not 1/10. So, answer should be C

Ans 41:

Shivani Shivu Singh from Pawar Public School Chandivili , Mumbai
Class : Class 8
c

Ans 42:

Arnesh Chakraborty from M P Birla Foundation Higher Secondary School, KOLKATA
Class : Class 8
ans should be cccc.

Ans 43:

Aniket kumar from kendriya vidyalaya, Delhi
Class : Class 8
c is right because we have to multiply cause we are given times.. 1000x___= 100... so we get 1000/10= 10 so c is right

Ans 44:

Hamsavarshini Swaminathan from St Anns Senior Secondary School, Roorkee
Class : Class 10

Ans 45:

sanjana from NARAYANA E TECHNO , Chennai
Class : Class 8
answer should be c not b

Ans 46:

Anika Saha from New Town School, KOLKATA
Class : Class 6
The correct answer is C as 100/10 is 10, 1000/100 is also 10.

Ans 47:

Hritvi from Podar International School, Mumbai
Class : Class 7

Ans 48:

krishneil from Elpro international school, Pune
Class : Class 6
The CORRECT answer is CCCCCCCCCCC mr SOF

Ans 49:

Antara Biswas from DPS Megacity, Kolkata
Class : Class 7
answer should be Cas 100 /10 is 10

Ans 50:

Agneya from Podar International, Mumbai
Class : Class 6
Ans should be (c)

Ans 51:

Viaan Shah from P e s Modern Scholl, Pune
Class : Class 7

Ans 52:

Parth Kaushish from MDPS, Faridabad
Class : Class 6
answer should be C because it already says the word divide and if we write ans as B then it will become ( eg. 100/1/10 = 1000) hence it should be ( eg. 100/10 = 10) . PLS CORRECT IT SOF !!!!!

Ans 53:

Shivani Shivu Singh from Pawar Public School Chandivili , Mumbai
Class : Class 8
look at solution please

Ans 54:

Abhijato Chatterjee from Bharatiya Vidya Bhavan, Kolkata, kOLKATA
Class : Class 6
The answer is c. It decreases by 1 by 10 when it goes from right to left, not from left to right.

Ans 55:

Karmanya Gupta from DPS, Udaipur
Class : Class 8
correct ans. should be C

Post Your Answer

Kavitharini Joseph from HUS, Chennai
Subject :IMO    Class : Class 4

Ans 1:

SWARIT JAIN from DPS Greater Noida, GREATER NOIDA
Class : Class 9
thank you

Ans 2:

Ava from trio, bangalore
Class : Class 2
C

Ans 3:

Wrik Chatterjee from DELHI PUBLIC SCHOOL NOIDA, Noida
Class : Class 5

Ans 4:

Vaishnavi from DPS , Singapore
Class : Class 4
B

Ans 5:

Mitesh from Shishya BEML Public School, Bengaluru
Class : Class 7
hey , it is 90 tenths cause tenths means at the tenths place only . But if if there is another no. like 90 tenths we should multiply . But if you choose hundredth tenths it it will become in thousands value.

Ans 6:

Ashwak from Cambridge, Jalandhar
Class : Class 9
The answer is B but if anyone has doubt , please call 9243729047 . I will explain it briefly to you .

Ans 7:

Vedika Kancharla from DDMS P Obul Reddy Public School, Hyderabad
Class : Class 5
b

Ans 8:

digamber12 from st francies xavier english medium school ajgaon, sawantwadi
Class : Class 4
b

Ans 9:

Midhuna from ABCD, Banglore
Class : Class 3
Ya B

Post Your Answer

Aarush Pathak from Vibgyor High Magarpatta City, Pune
Subject :IMO    Class : Class 5

Post Your Answer

B. Prakarsha from Sri Vidyanjali High School, Hyderabad
Subject :IMO    Class : Class 3

Post Your Answer

Arihant kumar from Delhi public school,EOK, New Delhi
Subject :IMO    Class : Class 4

Ans 1:

Arav Aanand from Father Agnel School, Noida
Class : Class 6
If the movie is for 2 hours it can be shown 6 times between 12 noon and 12 midnight which is 12 hours. 12/2=6. The answer is B.

Ans 2:

Jhumpa from BGKV, Kolkata
Class : Class 4
Ok

Post Your Answer

S Sreelakshmi from Sarvodaya vidyalaya, Trivandrum
Subject :IMO    Class : Class 7

Ans 1:

Garv Agarwal from Somerville School Noida, Noida
Class : Class 4
Why III is false?

Ans 2: (Master Answer)

Admin from revisewise, Noida
Class : Class 1
The correct answer is A.

Ans 3:

Nimisha Tambe from Narayana vidyalayam, Nagpur
Class : Class 8
AAA is not a property, hence 3rd statement is false.

Ans 4:

Naitik Mundra from International School Rheintal, Buchs Sankt Gallen
Class : Class 9
III is false because AAA is no property

Post Your Answer

Mayank Gupta from Kulachi Hansraj Model School, New Delhi
Subject :IMO    Class : Class 7

Ans 1:

Arnav Raj Sharma from GEMS International School the ultra master mega, Gurgaon
Class : Class 7
I agree with Ahmad.

Ans 2:

Akshara from NPS, Bengaluru
Class : Class 8
I agree . There are 6 letters with a rotational line of symmetry

Ans 3:

Snigdha swaminath from Christ nagar higher secondary school , Trivandrum
Class : Class 7
IT IS 6 RIGHT?

Ans 4:

Samarth Gupta from Heritage school, Jammu
Class : Class 10
I agree with Ahmad

Ans 5:

Himanish Basu from Army Public School Kamaraj Road, Bangalore
Class : Class 7
It is 7 becoz B has rotational symmetry of order2.

Ans 6:

Nishchay Gupta from Cambridge Court World School, Jaipur
Class : Class 6
Yes there are 6 letters I also agree with Ahmad

Ans 7:

Anusha from LBS School , Kota
Class : Class 10
I think the thickness of the lines of X makes the answer 5

Ans 8:

Saranya Ray from Vivekananda Mission School, Kolkata
Class : Class 8
Please Someone explain

Ans 9:

Amogh from Sindhi High School, Bangalore
Class : Class 7
I agree with Ahmad

Ans 10:

santosh katiyar from narayana vidhyalayam, Nagpur
Class : Class 7
please explain the answer in details

Ans 11:

Ahmad from Sai International School, Gadhinglaj
Class : Class 7
There is a mistake.Actually there are 6 lettersThose are-H, O, S, X, Z, N

Ans 12:

Shivani Shivu Singh from Pawar Public School Chandivili , Mumbai
Class : Class 8
check toppers.com

Ans 13:

SAMBRAM BILAGI from National Center for Excellence, Bangalore
Class : Class 9
Yes, I too agree with Ahamad.

Ans 14:

Kaustubh verma from CKC ACADEMY, Jhansi
Class : Class 7
I agree with Ahmad

Ans 15:

Arnav Nilesh Bang from Pratibha International School, Pune
Class : Class 8
answer should be 6

Ans 16:

Arin Das from Delhi Public School Nacharam, Hyderabad
Class : Class 8
I also agree with Ahmad

Ans 17:

Janvi Barman from St MarysGirls, Pune, Pune
Class : Class 8
The answer is six - H, O, S, X, Z and N.

Ans 18:

santosh katiyar from narayana vidhyalayam, Nagpur
Class : Class 7
h,o,x,s,n i think it is the answer

Ans 19:

N L Satam from sardar vallabhai patel vidyala, BHYANDER
Class : Class 2
how it can be a 6 I think so, there is only 5 H,O,X,S and Z

Ans 20:

Aditya Sai Vemparala from Amanora school, Pune
Class : Class 10

Ans 21:

Rayyaan Shetty from MRV Bandra West , Mumbai
Class : Class 10
Correct answer is 5.

Ans 22:

Joshua Sen from Montfort Senior Secondary School, Roorkee
Class : Class 10
HOSXZNcan u give more option

Ans 23:

akshith from ganges valley school, hyderabad
Class : Class 7
It is five letters since H,O,S,X and Z

Ans 24:

Ishaan S from Clarence Public School, Bangalore
Class : Class 7
I agree, it should be 6 - H, O, S, X, Z and N

Post Your Answer

Metla Sai Siri from NHVPS, Bangalore
Subject :IMO    Class : Class 2

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1
12 cartons have 60 cans 1 carton has 60/12=5 cans Hence, 2 cartons have 5x2=10 cans.

Post Your Answer