Logical Reasoning

Sequence & Series

Easy

From the given series, which is the Arithmetic Progression (AP)?

A. 7, 18, 29, 40, ...

B. 3, 13, 23, 33, ...

C. 3, -8, -3, 18, ...

D. 2, -2, -6, -10, ...

Choose the correct answer from the options given below:

A, C and D only

A, B and D only

A, C, and B Only

D, B and C only

✅ Correct Option: 2

A progression is an AP only if consecutive differences are constant.

A: differences $11, 11, 11$ , so AP.

B: differences $10, 10, 10$ , so AP.

C: differences $-11, 5, 21$ , not constant, so not an AP.

D: differences $-4, -4, -4$ , so AP.

Hence A, B and D.

2026: 14 May Shift 2

In the following question, an alphanumeric series is given as

5FU, 9IS, 13LQ, ?, 21RM

Choose the missing term (?) out of the given alternatives.

2025: 30 May Shift 2

Which of the following characters, when placed at the sign of interrogation (?) will complete the given pattern?

2022: 6 Aug Shift 1

Which letters exactly are midway between F and S in the English alphabet?

2026: 21 May Shift 1

Which of the following list of numbers is/are in Geometric Progression (GP)?

(A) 6, 18, 54, 162...

(B) 2, 6, 18, 25...

(D) 4, 12, 36, 108, ...

Choose the correct answer from the options given below:

2026: 19 May Shift 1

Study the given pattern carefully and select the option that can replace the question mark (?).

3	7	6
8	16	14
18	?	30

2025: 13 May Shift 1

Find the missing number from the given alternatives.

6	10	14
9	15	21
12	20	?

Solution