Which number does not belong to the sequence 3,5,9,17,32,65?
Show answer & explanation
Correct answer: A
Explanation
Rule: (previous number × 2) − 1
Let's check:
3 × 2 − 1 = 6 − 1 = 5
5 × 2 − 1 = 10 − 1 = 9
9 × 2 − 1 = 18 − 1 = 17
17 × 2 − 1 = 34 − 1 = 33 (but 32 is given in the sequence)
33 × 2 − 1 = 66 − 1 = 65
Here, 32 should have been in place of 32. Therefore, 32 does not belong to this sequence.