Test
Real Numbers
Time: 30 Minutes |
Maximum Marks- 25 |
Q. 1 The decimal expansion of
will terminate after how many places of decimal?
(a) 1
(b) 2
(c) 3
(d) 4
(1)
Q. 2 Which of the following is a rational number?
Q. 3 Express 32760 as a product of Prime factors.(2)
Q. 4 State whether the following rational numbers will have a terminating decimal expansion or non-terminating repeating decimal expansion:
(a)
(b)
(c)
(b)
Justify your answer.(3)
Q. 5 Prove that
is irrational (Proceed with justifying
as irrational)
(4)
Q. 6 (a) Given that HCF (161,345) = 23, find their LCM.(2)
(b) Explain why 7 × 11 × 13 + 13 and 7 × 6 × 5 × 4 × 3 × 2 × 1 + 5 are composite numbers.(2)