Question : Directions: In the following question a series is given, with one term missing. Choose the correct alternative from the given ones that will complete the series.
1, 6, 15, ?, 45, 66, 91
Option 1: 25
Option 2: 26
Option 3: 27
Option 4: 28
Answer (1)
25th Jan, 2024
Correct Answer: 28
Solution :
Given:
1, 6, 15, ?, 45, 66, 91
The pattern is as follows–
So, the required missing number is 28. Hence the fourth option is correct.
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