# Number System (IMO- Mathematics Olympiad (SOF) Class 7): Questions 11 - 16 of 81

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## Question number: 11

» Number System

MCQ▾

### Question

An insect crawls up 5 cm every second on a 60 cm vertical rod and then falls down 2 cm over the next second. How many seconds will it take to climb the rod?

### Choices

Choice (4) Response

a.

39 seconds

b.

30 seconds

c.

60 seconds

d.

20 seconds

## Question number: 12

» Number System

MCQ▾

### Question

The average of the two middle rational numbers if are arranged in ascending order is________.

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 13

» Number System

MCQ▾

### Question

The value of is ________.

### Choices

Choice (4) Response

a.

b.

144

c.

240

d.

0

## Question number: 14

» Number System

MCQ▾

### Question

8 is a ________ number

### Choices

Choice (4) Response

a.

Prime

b.

Irrational

c.

Rational

d.

Question does not provide sufficient data or is vague

## Question number: 15

» Number System

MCQ▾

### Question

In a magic square each row, column and diagonal have the same sum, then the values of A and B are respectively________.

 6 -1 4 A 3 5 2 7 B

### Choices

Choice (4) Response

a.

b.

0, 0

c.

1, 1

d.

## Question number: 16

» Number System

MCQ▾

### Question

If p: When a positive integer and a negative integer are added we always get a positive integer.

q: When two positive integers are added, we get a positive integer, then

### Choices

Choice (4) Response

a.

P and q are false

b.

P is true and q is false

c.

P and q are true

d.

P is false and q is true

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