IMO- Mathematics Olympiad Class 6: Questions 185 - 190 of 1049

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Question number: 185

» Number Systems

MCQ▾

Question

Product of two integer is 108 If one of the integers is 12 , then the other is

Choices

Choice (4) Response
a.

19

b.

1

c.

0

d.

-9

Question number: 186

» Playing With Numbers

MCQ▾

Question

Observe the following patterns. Then find the sum of 2+4+6+8+10++20 .

2=2×1=2

2+4=4×2=8

2+4+6=6×3=18

2+4+6+8=8×4=32

2+4+6+8+10=10×5=50

………………………………………………………. ……………………………………………………….

Choices

Choice (4) Response
a.

150

b.

320

c.

180

d.

200

Question number: 187

» Number Systems

MCQ▾

Question

The expression 5+(a+6) is equivalent to (5+a)+6 , uses the ________ property.

Choices

Choice (4) Response
a.

Associative

b.

Closure

c.

Identity

d.

Commutative

Question number: 188

» Number Systems

MCQ▾

Question

Multiply the unit’s place of the number obtained by reversing the digits of the number 78923 with the hundred’s place of the number obtained by interchanging the digits in the unit’s place and the thousand’s place of the same number, we get________.

Choices

Choice (4) Response
a.

54

b.

64

c.

16

d.

63

Question number: 189

» Playing With Numbers

MCQ▾

Question

A number is always divisible by 60 if

Choices

Choice (4) Response
a.

It is divisible by both 6 and 10

b.

It is divisible by both 2 and 30

c.

It is divisible by both 4 and 15

d. All a. , b. and c. are correct

Question number: 190

» Number Systems

MCQ▾

Question

Subtract the number obtained by reversing the digits of the number 20198 from the number obtained by interchanging the digits in the unit’s place and the hundred’s place of the same number, we get________.

Choices

Choice (4) Response
a.

77121

b.

- 68229

c.

68004

d.

- 68211

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