In the sequence of numbers 5, 8, 15, 20, 29, 40, 53, one number is wrong. The wrong number is :
Q. In the sequence of numbers 5, 8, 15, 20, 29, 40, 53, one number is wrong. The wrong number is :
Answer: 15
Notes: $latex 5\xrightarrow{+3}8\xrightarrow{+5}(13)15\xrightarrow{+7}20\xrightarrow{+9}29\xrightarrow{+11}40\xrightarrow{+13}53$ ∴ Incorrect No. = 15 Hence option [C] is the right answer.