IMO- Mathematics Olympiad (SOF) Class 6: Questions 207 - 212 of 1049

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Question number: 207

» Number Systems

MCQ▾

Question

Subtract the number obtained by reversing the digits of the number 65302 from the number obtained by interchanging the digits in the ten’s place and the hundred’s place of the same number, we get________.

Choices

Choice (4) Response

a.

95388

b.

-64746

c.

76446

d.

44676

Question number: 208

» Number Systems

MCQ▾

Question

Which one is correct?

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 209

» Playing With Numbers

MCQ▾

Question

What is the least number to be subtracted from 1936 so that when divided by 9,10 and 15 it will leave the same remainder in each case?

Choices

Choice (4) Response

a.

40

b.

44

c.

38

d.

42

Question number: 210

» Number Systems

MCQ▾

Question

ABC is a three digit number in which the digit A is greater than the digit B and C. If the difference between ABC and CBA is 297 and the difference between ABC and BAC is 450, find all possible three digit numbers ABC.

Choices

Choice (4) Response

a.

724

b.

946

c.

835

d.

All a. , b. and c. are correct

Question number: 211

» Playing With Numbers

MCQ▾

Question

A number is always divisible by 72 if

Choices

Choice (4) Response

a.

It is divisible by both 2 and 36

b.

It is divisible by both 3 and 24

c.

It is divisible by both 6 and 12

d.

All a. , b. and c. are correct

Question number: 212

» Number Systems

MCQ▾

Question

The integer which is 5 less than is

Choices

Choice (4) Response

a.

11

b.

c.

9

d.

2

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