# Mathematics-Playing With Numbers (NSTSE (National Science Talent Search Exam- Unified Council) Class 6): Questions 69 - 76 of 83

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## Question number: 69

» Mathematics » Playing With Numbers

MCQ▾

### Question

The number 623273 is divisible by

### Choices

Choice (4) Response

a.

5

b.

7

c.

All of the above

d.

None of the above

## Question number: 70

» Mathematics » Playing With Numbers

MCQ▾

### Question

The HCF of 15,20 and 30 is

### Choices

Choice (4) Response

a.

5

b.

20

c.

15

d.

10

## Question number: 71

» Mathematics » Playing With Numbers

MCQ▾

### Question

The LCM of two numbers is X and their HCF is Y. So, the sum of two numbers is

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 72

» Mathematics » Playing With Numbers

MCQ▾

### Question

The number of prime numbers between 2 and 15 are

### Choices

Choice (4) Response

a.

5

b.

4

c.

3

d.

6

## Question number: 73

» Mathematics » Playing With Numbers

MCQ▾

### Question

Difference between a prime (18) and a composite (30) number is

### Choices

Choice (4) Response

a.

19

b.

23

c.

12

d.

30

## Question number: 74

» Mathematics » Playing With Numbers

MCQ▾

### Question

60 is written as the product of primes as

### Choices

Choice (4) Response

a.

2

b.

2

c.

2

d.

2

## Question number: 75

» Mathematics » Playing With Numbers

MCQ▾

### Question

Observe the following table of sum of odd numbers and multiplication of same pair numbers. Then find the sum of odd numbers from 1 to 29.

### Choices

Choice (4) Response

a.

227

b.

100

c.

121

d.

225

## Question number: 76

» Mathematics » Playing With Numbers

MCQ▾

### Question

The greatest number of 5-digits exactly divisible by 9,12,16 and 30 is

### Choices

Choice (4) Response

a.

99603

b.

99306

c.

99364

d.

99360

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