International Maths Olympiad Forum By SOF Olympiad Trainer - Page 557
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Pradnya Ambatipudi from Vikas- The concept school, Hyderabad
Subject :IMO    Class : Class 5

Ans 1:

Nayanika Sadhish from CL Metha Sishya OMR, Chennai
Class : Class 8
If it is taken in the first month then it should be July..........................I think...................

Ans 2:

Rudra Tripathi from DPS Noida, Noida
Class : Class 10
If anyone says July is the answer than you have told the wrong answer ,the answer is June

Ans 3:

JOIS GEORGE from Dimension, Singapore
Class : Class 5
What happened to July?

Ans 4:

Rohan TR from Sri Aurobindo memorial school, Bangalore
Class : Class 6
It is d because it is wrong in solution

Ans 5:

Kavitharini Joseph from HUS, Chennai
Class : Class 6
c is the answer

Ans 6:

Prateeshtha Ghosh from Samhita Academy, Bangalore
Class : Class 8
C is the answer I am sure!

Ans 7:

Amulya Abhinav from Mount Litera Public School. , Begusarai
Class : Class 6
answer should be D

Ans 8:

kavya from the shishukunj international school, Indore
Class : Class 5
D is the answer as increase in height in April is 10 cm.,May is 12 cm., June is 11 cm., and July is 13 cm. So, the most increase in height took place in July.

Ans 9:

JOIS GEORGE from Dimension, Singapore
Class : Class 5

Ans 10:

kavya from the shishukunj international school, Indore
Class : Class 5
D is the answer as increase in height in April is 10 cm.,May is 12 cm., June is 11 cm., and July is 13 cm. So, the most increase in height took place in July.

Ans 11:

Kavitharini Joseph from HUS, Chennai
Class : Class 6
if you say that even may can be the answer

Ans 12:

Seshasayee sudharsan from PSBB Learning Leadership Academy, Bangalore
Class : Class 6
oh my god. you have posted the easiest question in science olympiad foundation for grade 5 . the ans is july

Ans 13:

Rohan TR from Sri Aurobindo memorial school, Bangalore
Class : Class 6
It is actually c because u should not count the cm in the month but in the before months increasing

Ans 14:

Yash from Dps, Noida
Class : Class 7
C

Ans 15:

Seshasayee sudharsan from PSBB Learning Leadership Academy, Bangalore
Class : Class 6
oh my god. you have posted the easiest question in science olympiad foundation for grade 5 . the ans is july

Ans 16:

Vedant Afre from City Pride School, Pune
Class : Class 10
d should be the answer

Ans 17:

Riddhiraj Saha from St. Xeviers Institution , Panihati, Kolkata
Class : Class 8
The answer is D.

Ans 18:

Hitanshi Behera from Loyola School , Bhubaneswar
Class : Class 4
well the increase in height took place BETWEEN june and july so pls do explain which one shall i take

Ans 19:

Yash from Dps, Noida
Class : Class 7

Ans 20:

Sharanyaa Tripathi from Uttam school for girls, Ghaziabad
Class : Class 8
yes, answer is C as the height was increased in June, not in July. The measure was taken on June 1st as mentioned. When you will read the question carefully, It will become really simple.Its not arduous at all.

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Mystic Girl from NPS, Bnagalore
Subject :IMO    Class : Class 5

Ans 1:

Advik Dixit from Ryan International School Sanpada Navi Mumbai , NAVI MUMBAI
Class : Class 5
How Reflex angle??? it is a right angle.

Ans 2:

Rayansh Mishra from VIBGYOR HIGH MAGARPATTA, Pune
Class : Class 8
Reflex on board

Ans 3:

Aaryana from Amaatra Academy, Bangalore
Class : Class 6

Ans 4:

Bhogavalli from Timpany , Visakhapatnam
Class : Class 4

Ans 5:

kavya from the shishukunj international school, Indore
Class : Class 5
c reflex angle

Ans 6:

Parijaat waghmare from Centre point school international, Nagpur
Class : Class 5

Ans 7:

Garvit Kaushik from DPS Panipat Refinery Township, Panipat
Class : Class 5
I want to go with answer c) Reflex Angle

Ans 8:

Akanksha Mohapatro from DPS Bangalore North, Bangalore
Class : Class 5
it is c)

Ans 9:

Prateeshtha Ghosh from Samhita Academy, Bangalore
Class : Class 8
For me it is (C)

Ans 10:

Garvit Kaushik from DPS Panipat Refinery Township, Panipat
Class : Class 5
I know you have this question from book of mtg imo class 5 chapter angles and question no. 10

Ans 11:

AARAV AGRAWAL from BIRLA DIVYA JYOTI, SILIGURI
Class : Class 8
it should be b

Ans 12:

Shiven Sidharth from Delhi Public School Vasant Kunj, New Delhi
Class : Class 7
Yes, same here. Answer is option C

Ans 13:

Jeremy Sen from Montfort Senior Secondary, Roorkee
Class : Class 5
how is it c tho??? its obtuse... right?

Ans 14:

ANKIT from devin-national school, bangalore
Class : Class 5
reflex angle as it has 20 more degrees added to 180 degrees

Ans 15:

Vedant Afre from City Pride School, Pune
Class : Class 10
It should be Option C) because Obtuse Angle is always less than 180 but more than 90 and X shown in the figure is greater than 180 degree so it should be Reflex Angle

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Mystic Girl from NPS, Bnagalore
Subject :IMO    Class : Class 5

Ans 1:

Aarya Teja from Bharatiya Vidya Bhavans Public School, Hyderabad
Class : Class 6
(a) 3 hours 45 min 15 seconds

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Abin Jose from Delhi Public School, Sagar
Subject :IMO    Class : Class 8

Ans 1:

B Sanjhna from Jindal Vidya Mandir, Ratnagiri
Class : Class 8
And is option C

Ans 2:

Arnab Jana from KTPP High School, KTPP
Class : Class 9
C

Ans 3:

B Sanjhna from Jindal Vidya Mandir, Ratnagiri
Class : Class 8
And is option C

Ans 4:

anay rungta from national public school yeshwanthpur, Bengaluru
Class : Class 9
LET THE NUMBER BE X AND Y X-Y=1 X=Y+1 GIVEN X+Y=25 EQUATE X AS Y+1 Y+1+Y=25 2Y+1=25 2Y=24 Y=12 X=25-Y=13 ANSWER IS C-12,13

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Abin Jose from Delhi Public School, Sagar
Subject :IMO    Class : Class 8

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Prateeshtha Ghosh from Samhita Academy, Bangalore
Subject :IMO    Class : Class 5

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Prateeshtha Ghosh from Samhita Academy, Bangalore
Subject :IMO    Class : Class 5

Ans 1:

Prateeshtha Ghosh from Samhita Academy, Bangalore
Class : Class 8
B

Ans 2:

Aarya Teja from Bharatiya Vidya Bhavans Public School, Hyderabad
Class : Class 6
Be sure that you are clear and tell me the version of your computer as a question in general subject right now. also you can send it as an answer in this post

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Aditya Sai Vemparala from Amanora school, Pune
Subject :IMO    Class : Class 7

Ans 1:

Ashfaq Mohamed from Private International English School, Abudhabi
Class : Class 10

Ans 2:

anay rungta from national public school yeshwanthpur, Bengaluru
Class : Class 9
TOTAL AREA OF FIGURE= 1/2 PI R^2= 1/2*14*14*22/7=308CM^2 AREA OF WHITE ARE= PI R^2 22/7*7*7=154 cm^2 THEREFORE RE O SHADED REGION= 308-154=154 CM^2 OPTION C IS CORRECT

Ans 3:

Vartika Agarwal from Phoenix world school, Pune
Class : Class 9
the answer is correct....your calculations might be wrong

Ans 4:

Aarav Srivastav from DWPS , Noida Extension
Class : Class 7
the answer is wrong

Ans 5:

Vartika Agarwal from Phoenix world school, Pune
Class : Class 9

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Mystic Girl from NPS, Bnagalore
Subject :IMO    Class : Class 5

Ans 1:

OISHIK KUNDU from Delhi Public school North kolkata, baranagar
Class : Class 4
Let’s see what pattern is being followed by the numbers in the above grid. Let’s take the first column – 7, 81, 2 If we add 1st and 3rd number = 7 2 = 9 And if we multiply 9 by 9 itself = 9 x 9 = 81. 81 is the 2nd number in the first column. Let’s see if the numbers in second column follow the same pattern. 9, 169, 4 We add 1st and 3rd number = 9 4 = 13 We multiply 13 by 13 itself = 13 x 13 = 169. 169 is the 2nd number in the second column. That means the numbers of third column will follow the same pattern. 11, ?, 6 We add 1st and 3rd number = 11 6 = 17 We multiply 17 by 17 itself = 17 x 17 = 289. 289 will be the missing number in the third column. So, the correct answer is Option D.

Ans 2:

Prateeshtha Ghosh from Samhita Academy, Bangalore
Class : Class 8
D

Ans 3:

Mystic Girl from NPS, Bnagalore
Class : Class 6
It is D because 11 6=17and 17x17 is 289.

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swanand from Maharashi vidya mandir, Hyderabad
Subject :IMO    Class : Class 6

Ans 1:

Gauri Singh from St Johns School Marhauli, Varanasi
Class : Class 8
option C is the answer as when you fold each of the other figures (opt. a, b, d), you will get the same cuboid as asked in the question. But in the third option, when you fold the figure along the lines, you will get a cuboid whose one face is missing..... So, this is the explanation :)

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