Question 10

# Four number-pairs have been given, out of which three are alike in some mannerandoneis different. Select the number-pair that is different from the rest.

Solution

In 35 : 1221,
3 + 5 = 8, 1 + 2 + 2 + 1 = 6
In 21 : 437,
2 + 1 = 3, 4 + 3 + 7 = 14
In 11 : 118,
1 + 1 = 2, 1 + 1 + 8 = 10
In 33 : 1085,
3 + 3 = 6, 1 + 0 + 8 + 5 = 14
In the option B, sum of the digits are even and odd both.
$$\therefore$$ The correct answer is option B.