11. A number which can be expressed in
the form of p/q, where q ≠ 0 is a
rational number is:-
a)
p and q are co- prime number
b)
p and q are real numbers
c)
p and q are irrational numbers
d)
p and q are integers
12. n2 – 1 is divisible by 8, if n is
a)
an integer b)
a natural number
c) an odd number d)
an even number
13. If a non- zero rational number is multiplied by an
irrational number then we always get –
a)
an irrational number b) a rational number
c)
zero d)
one
14. The largest
number which divides 70 and 125 leaving remainder 5 and 8 respectively is –
a)
13 b)
65 c) 875 d) 1750
15. The product of a non-zero rational and an
irrational number is –
a)
always irrational b) always rational
c)
rational or irrational d)
one
16. If we write 0
as a rational number, we get
a)
9/10 b) 1 c)
5/10 d) 0
17. Write an irrational number between 2 and 3 is –
a)
2.5 b) 2.001 c) 2.1333333456… d)
2.1
18. The least number that is divisible by all numbers
from 1 to 10 (both inclusive) is –
a)
10 b) 100 c) 504 d) 2520
19. if the HCF of 65 and 117 is expressible in the
form of 65m – 117 then the value of m is –
a)
1 b) 2 c)
3 d)
4
20. The greatest number that divides 87 and 97 leaving
7 as remainder is –
a)
10 b)
1 c)
87 x 97 d)
6300
Dr Rajesh Kumar Thakur
NB :- Answer is written with red colour
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