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WorksheetsREAL NUMBERS
Total questions: 10
Worksheet time: 5mins
Name
Class
Date
1.
Which of the following are coprimes
a)
4,6
b)
8,9
c)
5,10
d)
10,12
2.
HCF of 26 and 91 is:
a)
(a) 15
b)
(b) 13
c)
(c) 19
d)
(d) 11
3.
The sum of a rational and irrational number is
a)
(a) rational
b)
(b) irrational
c)
(c) both of above
d)
(d) none of above
4.
HCF of 8, 9, 25 is
a)
(a) 8
b)
(b) 9
c)
(c) 25
d)
(d) 1
5.
The decimal form of irrational number is
a)
(a) terminating
b)
(b) non-termining
c)
(c) non-terminating non-repeating
d)
(d) none of the above
6.
For a∈N, HCF of a, a+1 is
a)
a(a+1)
b)
a
c)
a+1
d)
1
7.
If 'b' is factor of 'a' where a≠b, then HCF of (a,b)
a)
a
b)
b
c)
ab
d)
'a' or 'b'
8.
If √p is rational, then 'p' must be
a)
Prime number
b)
Composite number
c)
Perfect square
d)
Odd number
9.
HCF of smallest prime and smallest composite number
a)
1
b)
2
c)
3
d)
4
10.
Which of the following is not irrational?
a)
π
b)
722
c)
0.4
d)
16.425871236....
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