real numbers MCQS -4
. If the HCF of 6 and 20 is 2, then the LCM is
40 B) 120 C) 60 D) 240
2. Which of the following number is not a product of prime factors
35 B) 26 C) 23 D) 15
3. 72 and 28 can be expressed using Euclid’s division algorithm as
A) 28 = (72 − 16) × 2
B)72 = (28 × 2) + 16
C) 72 = (28 × 2) − 16
D)16 = 72 − (28 + 2)
4) If 𝒙=𝒑/𝒒 (q ≠ 0) is a rational number having terminating decimal expression then the factor of ‘q’ are in the form A) 𝟐^𝒏 𝟓^𝒎 here m, n are, non negative integers
B) 𝟑^𝒏 𝟓^𝒎 here m, n are non positive integers
C) 𝟓^𝒏 𝟕^𝒎 here m, n are non negative integers
D) 𝟐^𝒏 𝟕^𝒎 here m, n are non positive integers
5. The decimal expansion of the rational number 𝟐𝟕/(𝟐^𝟑×𝟓^𝟒×𝟑^𝟐 ) will terminate after
(a) one decimal place
(b) two decimal places
(c) three decimal places
(d) four decimal places
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