MCQ on Real Numbers for SPI Aurangabad
HCF of 8, 9, 25 is
(a) 1
(b) 9
(c) 8
(d) 25
a
The product of a rational and irrational number is
(a) rational
(b) irrational
(c) both (a) & (b)
(d) None of these
b
The sum of a rational and irrational number is
(a) rational
(b) irrational
(c) both (a) & (b)
(d) None of these
b
The product of two different irrational numbers is always
(a) rational
(b) irrational
(c) both (a) & (b)
(d) None of these
b
The sum of two irrational numbers is always
(a) rational
(b) irrational
(c) both (a) & (b)
(d) None of these
b
The product of three consecutive positive integers is divisible by
(a) 4
(b) 6
(c) no common factor
(d) only 1
b
The set A = {0,1,2,3,4,……} represents the set of
(a) whole numbers
(b) integers
(c) natural numbers
(d) even numbers
a
Which number is divisible by 11?
(a) 1516
(b) 1452
(c) 1011
(d) 1121
b
LCM of the given number’x’ and ‘y’ where y is a multiple of ‘x’ is given by
(a) x
(b) y
(c) xy
(d) x/y
b
The product of a non-zero rational and an irrational number is
(a) always rational
(b) rationaly or irrational
(c) always irrational
(d) zero
c
The product of two consecutive natural numbers is always
(a) prime number
(b) even number
(c) odd number
(d) even or odd
b
When a number is divided by 7, its remainder is always
(a) greater than 7
(b) at least 7
(c) less than 7
(d) at most 7
c
The ratio between the LCM and HCF of 5, 15, 20 is
(a) 9 : 1
(b) 4 : 3
(c) 11 : 1
(d) 12 : 1
d
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