International Maths Olympiad Forum By SOF Olympiad Trainer

Riddhima Bhanja from presidium sector57, Gurgaon

Subject :IMO Class : Class 5

UO and UT are opposite rays. What is the measure of ∠RUN?

A80
B100
C125
D140

please explain

Ans 1: (Master Answer)

Admin from revisewise, Noida

Class : Class 1

The angle OUT is of 180 degrees because it is a straight line. Hence, the angle RUN will be X+23=180-(32+23)=125.

Ans 2:

Tapish bhadauriya from St. Joseph Sr. Sec. School, Auraiya

Class : Class 5

Options are wrong . Answer will be 95

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Riddhima Bhanja from presidium sector57, Gurgaon

Subject :IMO Class : Class 5

There were 3/5 as many men as women at a seminar. There were 48 fewer men than women. What was the total number of men and women at the seminar?

A120
B128
C192
D240

please explain

Ans 1:

harsh joshi from podar international school, gwalior, Gwalior

Class : Class 5

The answer is 192 solution- 48/2=24 (24+24+24)+(24+24+24+24+24)=192

Ans 2:

Aman from kv, Bengaluru

Class : Class 8

Answer is 192

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SATISH GUDWANI from mvn, Faridabad

Subject :IMO Class : Class 6

Figure X is made up of 6 identical squares. Three squares were removed from figure X to form figure Y. The perimeter of figure X is 300 m. What is the perimeter of figure Y?

A150 m
B200 m
C250 m
D300 m

how

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Ans 1:

Rcis from rcis, Bengaluru

Class : Class 9

the ans. is 200m . fig x has 12 sides so length of 1 side = 300/12 =25m . fig y has 8 sides so perimeter = 25 x 8 = 200m

Ans 2:

Agney Gurukul from ,

Class : Class 6

B

Ans 3:

Harsh singh from Msm delhi cantt, new delhi

Class : Class 6

iu7tgo87rfo

Ans 4:

Abhaid Goel from Indian School , Muladha

Class : Class 10

please explain it

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Suparn Agrawal from Delhi Public School Kashipur, kashipur

Subject :IMO Class : Class 5

Tom’s weight is 1/7th of his grandfather and 1/4th of his mother.
What fraction is Tom’s mother’s weight of his grandfather?

A4/7
B3/7
C3/4
D7/12

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Ans 1: (Master Answer)

Admin from revisewise, Noida

Class : Class 1

The correct answer is A.

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Kuldeep Battula from Deens Academy, Bengaluru

Subject :IMO Class : Class 7

The diameter of the big circle is divided into 5 parts. These five parts are the diameters of new circles as shown. If the circumference of the big circle is 30 cm, then the sum of the circumferences of the 5 smaller circles is

Asmaller than 30 cm
B30 cm
C45 cm
D60 cm

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Ans 1:

Paul T Mathew from Presidency School, Kasturinagar, Bangalore

Class : Class 7

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varshith from Sri Sundaravalli Memorial School, Perungalathur

Subject :IMO Class : Class 4

The given graph shows the weight of 5 children.

If Naina's weight increases by 5 kg, then what is the total weight of the five children?

(A) 135 kg

(B) 140 kg

(C) 145 kg

(D) 155 kg
if f 25 30 30 35 20 and naina's weight increases by 5 kg then it is 140 kg .why did you give c=145 kg

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Ans 1:

aaryan chandrakant sonawane from nanded city public school, Pune

Class : Class 6

B is the answer means 140

Ans 2:

aaryan chandrakant sonawane from nanded city public school, Pune

Class : Class 6

B is the answer means 140

Ans 3:

Shraddha from Delhi public school, Hyderabad

Class : Class 4

The answer is C only

Ans 4:

varshith from Sri Sundaravalli Memorial School, Perungalathur

Class : Class 6

b=140 kg

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Rcis from rcis, Bengaluru

Subject :IMO Class : Class 6

Find the figure from the options which will continue the series established by the problem figures.

(A)

(B)

(C)

(D)
the answer according to me should be option d instead of option c

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Ans 1:

Debaditya CHAKRABARTI from Shishya beml public school, Bengaluru

Class : Class 7

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Preety Sinha from DPS Gurgaon, Gurgaon

Subject :IMO Class : Class 3

In the figure below, a large rectangle has a length of 60 meters and a width of 20 meters. A smaller rectangle has a length of 30 meters and width of 20 meters. Which statement is correct?

AThe perimeter of the large rectangle is twice the perimeter of the small rectangle.
BThe perimeter of the large rectangle is equal to the perimeter of the small rectangle.
CThe perimeter of the large rectangle is 30 meters more than the perimeter of the small rectangle.
DThe perimeter of the large rectangle is equal to 160 meters and the perimeter of the small rectangle is equal to 100 meters.