# IMO Level 1- Mathematics Olympiad (SOF) Class 6: Questions 187 - 192 of 1059

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## Question 187

### Question

MCQ▾

The expression is equivalent to , uses the ________ property.

### Choices

Choice (4)Response

a.

Commutative

b.

Associative

c.

Closure

d.

Identity

## Question 188

### Question

MCQ▾

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.

16

b.

54

c.

64

d.

63

## Question 189

### Question

MCQ▾

A number is always divisible by 60 if

### Choices

Choice (4)Response

a.

It is divisible by both 4 and 15

b.

It is divisible by both 2 and 30

c.

It is divisible by both 6 and 10

d.

All a., b. and c. are correct

## Question 190

### Question

MCQ▾

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

## Question 191

### Question

MCQ▾

Find the sum of the given expression.

### Choices

Choice (4)Response

a.

- 90

b.

- 100

c.

55

d.

100

## Question 192

### Question

MCQ▾

There are 165 pens and 195 pencils. These pens and pencils are to be arranged in bags containing the same number of pens and pencils. Then the greatest number of pens and pencils possible in each bag is

### Choices

Choice (4)Response

a.

23

b.

13

c.

15

d.

18