International Maths Olympiad Forum By SOF Olympiad Trainer - Page 9

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Santosh Kumar Chandan from delhi public school , bokaro steel city

Subject :IMO Class : Class 6

If you start with the number 4321, how many iterations of the kaprekar process will it take to reach 6174?

A 4
B 3
C 2
D 5

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Bani Sanvi Tudu from Loyola school, bhubaneswar

Subject :IMO Class : Class 4

Which of the following figures is NOT exactly embedded in the Figure (X) as one of its parts?

A
B
C
D

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Ayaan Karthik from SBS, Noida

Subject :IMO Class : Class 6

Vidya travelled 2/5 of his journey by bus, 1/4 of the journey by metro and the remaining journey of 2 km by rickshaw. What was the total distance travelled by Vidya?

A 41/7 km
B 6 km
C 40/7 km
D 35/8 km

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Chinmay Jain from Olympus High Senior Secondary School, Vidisha

Subject :IMO Class : Class 9

In a row of students, Avantika is thirteenth from the left end and Manav is tenth from the right end. When Avantika and Manav interchange their positions, Avantika becomes twenty-fourth from the left end. Which of the following will be Manav's new position from the right end?

A20^th
B24^th
C21^st
D22^nd

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veer from the Bishops school , pune

Subject :IMO Class : Class 8

A number consist of two digits. The digit in the ten’s place exceeds the digit in the unit’s place by 4. The sum of the digits is of the number. Find the twice of number obtained by interchanging the digits.

A35
B48
C96
D84

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veer from the Bishops school , pune

Subject :IMO Class : Class 8

Which of the following is true for the rational numbers

A(a × b) × c = a × c + b × c
B(a ÷ b) × c = a × c – b × c
C(a – b) × c = a × c – b × c
Da × (b + c) = a × c – b × c

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Aarna Gupta from DPS EAST, BANGALORE , Bengaluru

Subject :IMO Class : Class 9

ax + by + c = 0 does not represent an equation of line, if ______.

Aa = c = 0, b ≠ 0
Bb = c = 0, a ≠ 0
Ca = b = 0
Dc = 0, a ≠ 0, b ≠ 0

isint the answer c

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Vaishnavi Sahu from St Johns English School and Junior College, Chennai

Subject :IMO Class : Class 5

On field day, Nitin jumped 4⁷⁄₁₂ feet and Anil jumped 3¹⁄₆ feet. How much farther did Nitin jump than Anil ?

A 2 feet
B 1⁵⁄₆ feet
C 1⁵⁄₁₂ feet
D ⁵⁄₁₂ feet