International Maths Olympiad Forum By SOF Olympiad Trainer - Page 712
  1. Home
  2. /  Forum

User Forum

Ask Your Question
PAHAL SETHIA from Indian school al ghubrah, Muscat
Subject :IMO    Class : Class 5

Ans 1:

PAHAL SETHIA from Indian school al ghubrah, Muscat
Class : Class 5
HAPPY NATIONAL DAY OF OMAN

Post Your Answer

Sumit G from Greenwood High International, Bengaluru
Subject :IMO    Class : Class 6

Ans 1:

ANUPRABHA BABU from SREE NARAYANA PUBLIC SCHOOL, KOLLAM
Class : Class 8
OPTION D.FIRST WE HAVE TO DIVIDE THE FIRST AND LAST NUMBERS IN ONE COLUMN ,IF WE TAKE THE FIRST COLUMN THE FIRST NUMBER IS 28 AND THIRD NUMBER IS 14. 28 DIVIDED BY 14 IS EQUAL TO 2. THIS 2 IS OBTAINED BY DIVIDING THE MIDDLE NUMBER 10 WITH 5. IN THE SECOND COLUMN THE FIRST NUMBER IS 68 AND THIRD NUMBER IS 17. 17 DIVIDED BY 68 IS EQUAL TO 4. THIS 4 IS OBTAINED BY DIVIDING THE MIDDLE NUMBER 20 WITH 5. SIMILARLY IN THE THIRD COLUMN THE FIRST NUMBER IS 45 AND THE THIRD NUMBER IS 9. 9 DIVIDED BY 45 IS EQUAL TO 5. SO WHEN WE DIVIDE THE MIDDLE NUMBER WITH 5 AND MULTIPLY IT WITH THE THIRD NUMBER WE GET THE FIRST NUMBER. HERE WE HAVE TO FIND THE MIDDLE NUMBER, SO WE HAVE TO MULTIPLY THE ANSWER WE GOT WHEN WE DIVIDED THE FIRST AND THIRD NUMBERS THAT IS 5 WITH 5,THAT IS 25. SO THE MIDDLE NUMBER IS 25 . IF WE WANT TO CHECK THE ANSWER WE CAN DIVIDE THE MIDDLE NUMBER 25 WITH 5 WHICH GIVES US THE ANSWER 5. WHEN WE MULTIPLY 5 WITH THE THIRD NUMBER 9 WE GET THE ANSWER 45 WHICH IS THE FIRST NUMBER. HENCE OUR ANSWER IS PROVED.SO WE CAN SAY THAT OPTION D IS THE ANSWER.

Ans 2:

ARUNAV from DPS VINDHYANAGAR, VINDHYANAGAR
Class : Class 10

Ans 3:

G Kavin Raj from meena sankar vidhyalaya , Tirunelveli
Class : Class 6
option d is the correct answer .r

Ans 4:

AASHRAY TALATI from Dr Amin Memorial school, Vadodara
Class : Class 6

Post Your Answer

Anurag peddi from Niraj International School, Hyderabad
Subject :IMO    Class : Class 7

Ans 1:

Anurag peddi from Niraj International School, Hyderabad
Class : Class 9
Yeah it sucks

Ans 2:

Anurag peddi from Niraj International School, Hyderabad
Class : Class 9
Yeah it sucks

Post Your Answer

AARYA RAHUL MAHAJAN from RUSTOMJEE INTERNATIONAL SCHOOL, Jalgaon
Subject :IMO    Class : Class 3

Ans 1:

Rajveer from DPS, Bengaluru
Class : Class 3
a

Post Your Answer

Ankitha from Hyderabad Public School, Begumpet, Hyderabad
Subject :IMO    Class : Class 5

Ans 1:

Aryan Sirohi from Mount LItera Zee School, Bangalore
Class : Class 8
the answer is c not b because 1*140=140,2*70=140,5*28=140,10*14=140

Ans 2:

PAHAL SETHIA from Indian school al ghubrah, Muscat
Class : Class 5
b is the answer

Post Your Answer

shriyans from mount litera zee schhol, Kolkata
Subject :IMO    Class : Class 3

Ans 1:

Shiven Dinkar from DPS NOIDA Sector 30, Delhi
Class : Class 4
i know the answer

Ans 2:

Rajveer from DPS, Bengaluru
Class : Class 3
d

Ans 3:

Prasanna Hegde from Vibgyor High Horomavu, BENGALURU
Class : Class 5
Answer:17 Option:D

Post Your Answer

Naman Garg from Deens Academy,Gunjur, Bangalore
Subject :IMO    Class : Class 2

Post Your Answer

anandita anand from BISHOP SCOT GIRL SCHOOL, PATNA, PATNA
Subject :IMO    Class : Class 6

Ans 1:

Dola Sai Anushka from Global Indian International school, singapore
Class : Class 7
it should be C

Ans 2:

Ayan Vohra from Bhavan Vidyalaya , Chandigarh, chandigarh
Class : Class 8
statement 1- The definition of perfect number on google is the same as the definition of perfect number provided by the question as for statement 2 eg 6 and 4 is divisible by 2 so 6 4= 10 div by 2 and 6-4= 2 also div by 2. so people who say answer is b c or d are complete idiots

Ans 3:

Shivansh Pant from National Center For Excellence, Bangalore
Class : Class 10
the answer should be b

Ans 4:

Aadvik saini from Mvn sector 17, Faridabad
Class : Class 8
I am confused what is the answer because some are saying a , some are saying b ,some are saying c and some are saying d .

Ans 5:

Shivansh Pant from National Center For Excellence, Bangalore
Class : Class 10
sorry, a is the correct one

Ans 6:

Parth Kaushish from MDPS, Faridabad
Class : Class 6
it should be A because if we take 39 and 26 as multiples and 13 as factor then 39-26=13. which is divisible by 13

Ans 7:

Swastik Sharma from Modern Vidya Niketan 17, Faridabad, Faridabad
Class : Class 8

Ans 8:

Swarit from Indian School Wadi kabir, Muscat
Class : Class 6
the correct answer is c

Ans 9:

Aarush manglani from chirec international school, Hyderabad
Class : Class 10
b is correct

Ans 10:

pranjal kaur from SVISG, DELHI
Class : Class 6
b is the correct answer

Ans 11:

Aarav Srivastav from DWPS , Noida Extension
Class : Class 7

Ans 12:

ABHIRAM from chirec, HYDERABAD
Class : Class 10
its b

Ans 13:

aaraadhanaa from innisfree house school, Bangalore
Class : Class 6
i think it is c

Ans 14:

Navya from Gyanshree, Noida
Class : Class 6
The answer is A!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!Kindly adhere!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Ans 15:

Shaurya from Mris 51 Gurugram, Gurugram
Class : Class 7
b

Ans 16:

Joe Bipin from National Public School Agra, Bangalore
Class : Class 10
the answer is b

Ans 17:

Dhruv Bhat from NPS Indiranagar, Bangalore
Class : Class 6
its b because say if you take 6,and you say 2 and 3 are divisible by it. then they are saying that their sum and diff is also divisible but 2 3 is 5 which is not divisible by 6

Ans 18:

Faraz Khan from Rassaz International, Mumbai
Class : Class 6
D is the correct answer

Ans 19:

Anika Saha from New Town School, KOLKATA
Class : Class 6
some are saying a, some are saying b, some are saying c and some are saying d. what is the correct answer??????

Ans 20:

Aaditva from Vasant Valley School, New Delhi
Class : Class 8
a because lets take 6, its factors are 1,2,3,6. When we add these numbers we get 12 which is twice 6

Ans 21:

Arnesh Chakraborty from M P Birla Foundation Higher Secondary School, KOLKATA
Class : Class 8
correct answer is aaaaaaaaaaaaaaaaaaaaaaaaa

Ans 22:

Aarush manglani from chirec international school, Hyderabad
Class : Class 10
b is correct

Ans 23:

Sharmi Chowdhury from G.D Birla Centre For Education , Kolkata
Class : Class 7
According to me, A is the correct answer.

Ans 24:

Aarna Gupta from DPS EAST, BANGALORE , Bengaluru
Class : Class 9

Ans 25:

Myra Negi from DPS Noida, Noida
Class : Class 9
1 is a factor of 6

Ans 26:

Anshuman D from MVM, Hyderabad
Class : Class 9
According to me ,it is C

Ans 27:

Kumar Krishiv from Apeejay School, Noida
Class : Class 8
Answer is A

Ans 28:

Jaiansh Dabas from St Xaviers High School, Gurgaon
Class : Class 7
The ans is a becauseStatement 1: if we take the number 6 its factors except 6 are 1,2,3 there sum is 6 so it is a perfect numberStatement 2: If we take 9 and 27 they are divisible by 3 so their sum which is 36 is also divisible by 3 and there diffrence is 18 which is divisible by 3.

Ans 29:

Devang Shukla from Ryan Christian School, Mumbai
Class : Class 9
THE CORRECT ANSWER IS A

Ans 30:

Ishaan Shivakumar from Bombay Scottish , Mahim West
Class : Class 6
ans is b

Ans 31:

Arnesh Chakraborty from M P Birla Foundation Higher Secondary School, KOLKATA
Class : Class 8
statement 1- The definition of perfect number on google is the same as the definition of perfect number provided by the question as for statement 2 eg 6 and 4 is divisible by 2 so 6 4= 10 div by 2 and 6-4= 2 also div by 2. so people who say answer is b c or d are complete idiots

Ans 32:

Aarav Srivastav from DWPS , Noida Extension
Class : Class 7
a is correct

Ans 33:

Sanskriti Samant from Euroschool Wakad, Pune
Class : Class 8
according to me , its B as if two numbers are divisible by a number , their sum and difference is not divisible by the same number . For example : 2

Ans 34:

Samruddh from School, Bengaluru
Class : Class 6

Ans 35:

Anish Academy from Delhi Public School, Hyderabad nacharam telangana
Class : Class 6
muuuuuuuuuuuuuuuuuusko munda

Ans 36:

animikh from don bosco school , kolkata
Class : Class 6
THE ANSWER SHOULD BE NONE OTHER THAN C. NOT A , NOT B OR NOR D. NOOOOOO ABD

Ans 37:

Niranjhan Rajeshkumar from Deens Academy, Whitefield, Bengaluru
Class : Class 8
The answer can only be C. For the first statement, If you take an example as 6, it will be 1 2 3=6 which means statement 1 is false as it is written that it should be double. Statement 2 is true. For example, take 25 and 20 and the number as 5. 25 20=45(Divisible by 5) and 25-20=5(Divisible by 5)

Ans 38:

Navya from Gyanshree, Noida
Class : Class 6
Sorry I meant B

Post Your Answer

Pradeep Mishra from chirec, Hyderabad
Subject :IMO    Class : Class 4

Ans 1:

Mugdha O M from National Public School, Bengaluru
Class : Class 8

Ans 2:

Shreyansh Saha from Garden High School, Kolkata
Class : Class 6

Ans 3:

Ambit Biswas from Oriental Public School, Kalyani, Kalyani
Class : Class 5
The option is A

Ans 4:

Aarathy Sudhir Aarav Sudhir from Global Indian International School, Abu Dhabi
Class : Class 7
a

Ans 5:

BV Karthikeya from Sentia, Hyderabad
Class : Class 6
a

Post Your Answer

Anish Bharadwaj from Delhi public school , Singapore
Subject :IMO    Class : Class 6

Post Your Answer