MCQS -2
1. If a and b are any two positive integers then
HCF ( a, b ) × LCM ( a, b ) is equal to
(a) a + b. (b) a – b. (c) a b. (d) a b
2. The H.C.F. of the smallest prime number and the smallest composite number is
(a) 1. (b) 2. (c) 3. (d) 4
3. The decimal expansion of 23/20 is:
(a) terminating
(b) non-terminating and non-recurring
(c) non-terminating and recurring
(d) doesn’t exist
4. The rational number having a non-terminating and repeating decimal expansion in the
following is
(a) 1/5^2 . (b) 1/50. ( c) 5/(2×7). (d) 1/2^3 .
5. HCF of 26 and 91is(a) 7. (b) 13. (c) 20. (d) 26
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