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Hridyansh Goyal from DAV Model School, IIT Kharagpur , Kharagpur

Subject :IMO Class : Class 3

If × = 100, ÷ 2 = and + + + + = 100 ÷ , then find the value of .

A25
B10
C5
D4

Only 10*10 gives 100 so option B is only feasible solution. However, the answer is D that 4. Can anyone help on how to solve this?

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Rishit Mathur from Apeejay Noida, Delhi

Subject :IMO Class : Class 9

In a school, there are 40 students in which boys and girls are in the ratio 3 : 1. The mean age of the boys is 20 years and the mean age of the girls is 18 years. If there is increase in girls by 5 and decrease in boys by 10, then find the new average age (approx.) when the students joining or leaving doesn't change the average age of boys and girls respectively.

A 15 years
B 19 years
C 16 years
D Can't say

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Amrit Shankar Pandey from Kendriya Vidyalaya No.1 Tambaram, Tambaram

Subject :IMO Class : Class 5

Find the difference between the greatest and the smallest 8-digit numbers formed by using the digits 7, 4, 2, 8, 6, 1, 5, 0 (using each digit only once).

A77408532
B7470838
C6434534
D57408532

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Arshia Kochhar from Delhi Public School Dwarka , New Delhi, Dwarka

Subject :IMO Class : Class 5

If and then

A
B
C
D

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Mahi from BIS , delhi

Subject :IMO Class : Class 4

If + + + + = 35 and = + , then find the value of + .

A10
B18
C20
D15

bacha parti chalo hai

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suyash from Narayana E-Techno, GURGAON

Subject :IMO Class : Class 7

Find the value of [(a - b)² (a + b)² (a + b)] ÷ (a² + 2ab + b²) (a² - 2ab + b²), when a = -1 and b = 2.

A1
B0
C10
D8

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Shreyas Kulkarni from Madhav Sadashiv Golwalkar Guruji Vidyalay, Pune

Subject :IMO Class : Class 9

If O is centre of circle as shown in figure, ∠SOP = 102° and ∠ROP = ∠SOU = 72°, then find ∠OSU and ∠RTU respectively.

A54°, 93°
B45°, 110°
C54°, 96°
D45°, 94°

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Pushkar Kishor Pawara from Chavara English Medium School, Nandurbar

Subject :IMO Class : Class 7

If then find the value of x and correct representation on the number line.

A
B
C
D

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HARSHIT SHARMA from BAL BHARATI PUBLIC SCHOOL NTPC JHANOR, BHARUCH

Subject :IMO Class : Class 8

In the given figure (not drawn to scale), ABCD is a trapezium with AB parallel to DC, ADE is an isosceles triangle with AD = AE. Find ∠AEB and ∠EAB respectively.

A105°; 34°
B105°; 41°
C41°; 105°
D105°; 54°

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Nisarg C Patel from QACS, Bharuch

Subject :IMO Class : Class 5

Kunal cut a wire and bent it to form 6 similar rectangles. The breadth of each rectangle is 4 cm less than the half of its length. If the breadth of a rectangle is 18 cm, then what is the original length of the wire?

A656 cm
B744 cm
C696 cm
D764 cm

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