Mathematics-Multiples and Factors [NSTSE (National Science Talent Search Exam- Unified Council) Class 4]: Questions 48 - 57 of 99

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Question 48

Question MCQ▾

LCM of 12 and 20 is:

Choices

Choice (4)Response

a.

40

b.

60

c.

48

d.

72

Edit

Question 49

Question MCQ▾

The sum of least prime number and the least composite number is:

Choices

Choice (4)Response

a.

9

b.

6

c.

3

d.

7

Edit

Question 50

Question MCQ▾

The number 36 has ________.

Choices

Choice (4)Response

a.

5 factors

b.

3 factors

c.

7 factors

d.

9 factors

Edit

Question 51

Question MCQ▾

LCM of 8 and 12 is:

Choices

Choice (4)Response

a.

24

b.

42

c.

72

d.

32

Edit

Question 52

Question MCQ▾

What is the difference between the least common multiple and least common factor of the numbers 15 and 20 (except 1) ?

Choices

Choice (4)Response

a.

45

b.

55

c.

40

d.

60

Edit

Question 53

Question MCQ▾

________ is a factor of every number.

Choices

Choice (4)Response

a.

0

b.

3

c.

1

d.

4

Edit

Question 54

Question MCQ▾

________ should be added to 319 to make it divisible by 3.

Choices

Choice (4)Response

a.

0

b.

2

c.

3

d.

1

Edit

Question 55

Question MCQ▾

A number which when divided by 2, leaves one as remainder, is ________ number.

Choices

Choice (4)Response

a.

Twin prime

b.

Prime

c.

Even

d.

Odd

Edit

Question 56

Question MCQ▾

Write the least 2-digit number that has as factors?

Choices

Choice (4)Response

a.

50

b.

34

c.

48

d.

56

Edit

Question 57

Question MCQ▾

Numbers which have only two factors are called ________ numbers.

Choices

Choice (4)Response

a.

Twin prime

b.

Composite

c.

Even

d.

Prime

Edit