

Directions: Find out the missing number.
Series is ( +2 ÷ 2)
(33.75 + 2) ÷ 2 = 17.875
Directions: Find out the missing number.
×1 + 12, ×2 + 22, ×3 + 32, ×4+42
=51 × 4 + 42 = 220
Directions: Find out the missing number.
+ 3, + 6, + 12, + 24, + 48
= 51 + 48 = 99
Directions: Find out the missing number.
Series is
×0.5 + 0.5, ×1+1, ×1.5 + 1.5
So, 9 ×2+2 = 20
Directions: Find out the wrong element.
Series are sum of prime number
11+7 = 18, 18 +11 = 29, 29+13 = 42, 42 +17 = 59, 59+19 = 78,
So, 78 in place of 80