Logical Reasoning

Sequence & Series

Easy

Find the next term (?) in the given series:

1, 3, 6, 10, 15, ?, ...

✅ Correct Option: 2

These are triangular numbers; the differences are 2, 3, 4, 5, so the next difference is 6.

Hence the next term is $15 + 6 = 21$ .

2023: 28 May Shift 1

Complete the series,

3, 12, 27, 48, 75, 108, ?

2023: 11 June Shift 2

What would come at question (?) mark place?

2026: 12 May Shift 1

Choose the correct option from the given ones that will complete the series: 6, 8, 12, 18, 26, ?

2025: 23 May Shift 1

Find the missing number in the following diagram:

2026: 14 May Shift 1

Select the set of letters that when sequentially placed in the blanks of the given letter series will complete the series.

f _ hg _fh _ g

A. g

B. f

C. h

Choose the correct answer from the options given below:

2025: 20 May Shift 2

What number should replace the question mark?

Solution