Mathematics-Playing With Numbers (NSTSE (National Level Science Talent Search Examination) Class 6): Questions 67 - 75 of 83

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Question number: 67

» Mathematics » Playing With Numbers

MCQ▾

Question

The least number which when divided by 16, 18, 24 leaves in each case a remainder of 5 is

Choices

Choice (4) Response

a.

148

b.

144

c.

140

d.

149

Question number: 68

» Mathematics » Playing With Numbers

MCQ▾

Question

The greatest number that will divide 162, 122 and 142 leaving a remainder of 2 in each case is

Choices

Choice (4) Response

a.

22

b.

120

c.

20

d.

30

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

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