Replace the question mark with a term from the options which follows the same…
2025
Replace the question mark with a term from the options which follows the same relationship as shown by the first two terms:
6, 11, 21, 36, 56,____
- A.
42
- B.
51
- C.
81
- D.
91
Attempted by 239 students.
Show answer & explanation
Correct answer: C
Key pattern: the differences between consecutive terms increase by 5 each time.
Compute the differences: 11 - 6 = 5, 21 - 11 = 10, 36 - 21 = 15, 56 - 36 = 20.
These differences form the sequence 5, 10, 15, 20, which increases by 5 each step.
Next difference = 20 + 5 = 25, so the next term = 56 + 25 = 81.
Therefore the missing term is 81.