Worksheet-3-Playing with numbers-factors and multiples-class 5 and class 6

Worksheet-3-Playing with numbers-factors and multiples-class 5 and class 6

1.	Which of the following is divisible by 3?
	a)	121	b)	123
	c)	124	d)	122
2.	If a number is divisible by 2 and 3 both then is divisible by
	a)	5	b)	6
	c)	8	d)	4
3.	The sum of two odd and one even number is always
	a)	Even	b)	odd
	c)	Prime	d)	can be even or odd
4.	Two numbers having only 1 as common factor are called
	a)	prime numbers	b)	co-prime numbers
	c)	composite numbers	d)	odd numbers
5.	Number of factors of a given number are:
	a)	1	b)	2
	c)	Finite	d)	Infinite
6.	The number of multiples of a given number are:
	a)	1	b)	2
	c)	Finite	d)	infinite
7.	Which number is neither prime nor composite
	a)	0	b)	1
	c)	2	d)	3
8.	Which of the following pair is co-prime
	a)	6 and 8	b)	18 and 35
	c)	7 and 14	d)	30 and 3
9.	Common factors of 15 and 25 are
	a)	15	b)	25
	c)	5	d)	75
10.	Which of the following is divisible by 3
	a)	15287	b)	15267
	c)	15286	d)	152638
11.	How many factors does 36 has
	a)	7	b)	9
	c)	10	d)	8
12.	Every number is a multiple of
	a)	1	b)	2
	c)	1 and itself	d)	Itself
13.	Which of the following is divisible by 9?
	a)	15287	b)	15267
	c)	15286	d)	152658
14.	If a number is divisible by 9, it must be divisible by ____.
	a)	6	b)	3
	c)	2	d)	12
15.	The multiples of 2 are also called as
	a)	composite numbers	b)	prime numbers
	c)	odd numbers	d)	even numbers
16.	Which of the following is a perfect number?
	a)	4	b)	6
	c)	8	d)	12