Find the Missing Number in the Following Series:
1, 6, 13 ,22, 33, ?
- 46
- 36
- 28
- 20
Answer: (1) 46
Explanation:-
1, 6, 13, 22, 33, ?
1 + 5 = 6,
6 + (5 + 2) = 6 + 7 = 13,
13 + (7 + 2) = 13 + 9 = 22,
22 + (9 + 2) = 22 + 11 = 33,
Similarly,
33 + (11 + 2) = 33 + 13 = 46.
Then, the missing number is 46.
Hence, the answer is (1) 46.