Directions : In questions no. 7 to 10, find the odd number/ letters/ number pair from the given alternatives.
7. (A) (11, 13) (B) (5, 7) (C) (47, 49) (D) (29, 31
[ A ] a
[ B ] b
[ C ] c
[ D ] d
Answer : Option C
Explanation :
(11, 13), (5, 7) and (29, 31) are consecutive prime numbers. But (47, 49) is not a consecutive number because 49 is a multiple of 7.