International Maths Olympiad Forum By SOF Olympiad Trainer

Srija Ghosh from Kendrya Vidyalaya Number 2 Colaba, mumbai

Subject :IMO Class : Class 6

Jatin was trying to tessellate regular pentagons. He managed the following figure.

The size of angle ‘a’ is:

A30
B32
C36
D44

how do we do this one?

Ans 1:

Manish Dhoot from Sun city world school, Gurgaon

Class : Class 4

36 because - angle of regulat pentagon = 108 therefore a = 360 - 108-108-108

Ans 2:

suman bharti from ST Joseph's Convent Girls S.S School, Jabalpur

Class : Class 6

Post Your Answer

Gauri Yadav from Delhi public school noida, NCR

Subject :IMO Class : Class 5

What is 6050.287 rounded to the nearest ten ?

(A) 6050

(B) 6100

(C) 6050.29

(D) 6050.3

why not 6050

Ans 1:

sandynhpc@gmail.com from Kendriya Vidyalaya Sector12 Dwarka, New Delhi

Class : Class 5

Answer should be AAnswer should beA

Ans 2:

sandynhpc@gmail.com from Kendriya Vidyalaya Sector12 Dwarka, New Delhi

Class : Class 5

Answer should be AAnswer should beA

Ans 3:

Raj from Raj Aryan, Aryan

Class : Class 6

IT'S A!!!!!!!!!!!!!!!!!!!!!! It has asked tens! not tenths!

Ans 4:

Siddharth from Kennedy Global The High, hydeabad

Class : Class 6

d is wrong

Ans 5:

mad from cps, Nagpur

Class : Class 7

Answer is A

Ans 6:

Karmanya Gupta from DPS, Udaipur

Class : Class 8

Ans 7:

Amit Bhasin from Podae International School, Nerul

Class : Class 8

d is wrong . answer will be a as all the numbers after the rounded number become 0 and therefore has no value.

Ans 8:

Ayush Kumar from Maria Assupta Sr. Sec. Convent School, KASHIPUR

Class : Class 5

Ans 9:

Ayush Kumar from Maria Assupta Sr. Sec. Convent School, KASHIPUR

Class : Class 5

In the question it should be write tenth if the answer is 6050.3.

Post Your Answer

Hp2505 from Tps, Mumbai

Subject :IMO Class : Class 9

If the measured value of percentage error (correct to one decimal place) made in calculating the volume of a sphere is _____ .

(A) 2.1

(B) 3.2

(C) 4.6

(D) 5.4

Ans 1: (Master Answer)

Admin from revisewise, Noida

Class : Class 1

The correct answer is C.

Post Your Answer

Hp2505 from Tps, Mumbai

Subject :IMO Class : Class 9

What is the unit digit in the product (3 ⁶⁵ x 6 ⁵⁹ x 7 ⁷¹) ?

(A) 1

(B) 2

(C) 4

(D) 6

Ans 1:

pratham garg from delhi public school, chandigarh

Class : Class 10

6

Post Your Answer

Hp2505 from Tps, Mumbai

Subject :IMO Class : Class 9

If B says that his mother is the only daughter of A's mother, how is A related to B ?

(A) Son

(B) Father

(C) Brother

(D) Uncle

Ans 1:

Ashish from DPS North, Bengaluru

Class : Class 9

D. uncle

Ans 2:

Namanjain5589@Gmail.com from Yugantar Public School , Rajnandgaon

Class : Class 9

C)Brother

Ans 3:

Aarthi from Prince matriculation higher secondary school , Chennai

Class : Class 9

C) Brother

Ans 4:

Ashish from DPS North, Bengaluru

Class : Class 9

D. uncle

Ans 5:

Rahul kumar from Khublal yadav smarak high school bishanpur, Jamui

Class : Class 9

D therefore A is meternal uncle of B

Post Your Answer

Tanvi Ritisha Dash from delhi public school bangalore east, Bengaluru

Subject :IMO Class : Class 5

Ninety million ninety thousand ninety is ____.

(A) 90 900 90

(B) 900 900 90

(C) 90 90 90

(D) 90 90 900

pls help

Ans 1:

Karmanya Gupta from DPS, Udaipur

Class : Class 8

its all wrong

Ans 2:

Sumit G from Greenwood High International, Bengaluru

Class : Class 8

All are wrong

Ans 3:

Ayush from VIBGYORHIGH , Bangalore

Class : Class 5

A should be the right answer. can you explain why B is hte answer

Post Your Answer

sanjay shete from ,

Subject :IMO Class : Class 8

Simplify:

A
B
C
D

the ans cannot be b because when we solve it then after addition and sub we should get negetive sign and then after we divide it then the sign should get positive

Ans 1:

Admin from SOF, Noida

Class : Class 10

Answer: B

Solution
Applying BODMAS and simplifying
(-4/3) + (-5/2) - (7)
= -65/6
= -10 5/6

Post Your Answer

Satwik from Air force school, Jorhat

Subject :IMO Class : Class 8

The volume of cubical box is 216 m³. The length of the longest rod that can be placed in the box, is ____.  

A 6 m
B 6√2 m
C 6√3 m
D 12 m

Ans 1:

Ganesh from Global Indian International School, Kuala Lumpur

Class : Class 10

Ans 2:

om subham pati from Dps ranchi, Ranchi

Class : Class 10

let side=x x^3=216 x=6 side=6 longest rod=(3*36)^1/2 =6*3^1/2 option 3

Post Your Answer

Rameshwari from Jain English School Ambad, Ambad

Subject :IMO Class : Class 7

If the first and sixth letters in the word 'COMPROMISE' are interchanged, also the second and seventh letters are interchanged and so on, which letter will be seventh letter from the right?

(A) I

(B) S

(C) E

(D) R
How to solve this question

Ans 1:

AKKSHAT BHUTADA from KILBIL ST JOSEPH, NASIK

Class : Class 7

Ans 2:

RHEVA FRANCIS from bhavans chevayur, Kozhikode

Class : Class 10

after interchanging- 1-O 2-M 3-I 4-S 5-E 6-C 7-O 8-M 9-P 10-R therefore seventh letter from the right should be E.

Post Your Answer

dhirendra from Shri O P Jindal Vidya Niketan, Mundra Kutcch

Subject :IMO Class : Class 5

Laksha wrote a number that is two hundred sixty-five thousand, one hundred eight greater than thirty-two thousand, two hundred twenty-nine. What number did she wrote?

A297,000
B297,300
C297,327
D297,337

what n

View All Answers (3)

Ans 1:

Siddharth from Kennedy Global The High, hydeabad

Class : Class 6

265105 plus 32229 is 297337so answer is D

Ans 2:

Arushi from Indira National School, Pune

Class : Class 9

265105 plus 32229 is 297337

Ans 3:

Siddharth from Kennedy Global The High, hydeabad

Class : Class 6

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