Letter and Number Series questions with solutions

1. Question 1Easy

   Find the next term: 2, 4, 8, 16, ?

   • A.32Correct
   • B.34
   • C.30
   • D.28
   Show solution

   Each term doubles, so after 16 comes 32.

2. Question 2Easy

   Find the next term: 1, 4, 9, 16, ?

   • A.25Correct
   • B.30
   • C.20
   • D.24
   Show solution

   The terms are perfect squares, so the next is 5² = 25.

3. Question 3Easy

   Find the next term: 7, 14, 28, ?, 112.

   • A.48
   • B.50
   • C.56Correct
   • D.42
   Show solution

   Each term doubles, so after 28 comes 56 (and then 112).

4. Question 4Easy

   Find the missing number: 4, 9, 16, ?, 36.

   • A.25Correct
   • B.20
   • C.30
   • D.24
   Show solution

   The numbers are squares 2², 3², 4², 5², 6², so the missing one is 5² = 25.

5. Question 5Easy

   Find the next term: 7, 14, 28, 56, ?

   • A.112Correct
   • B.110
   • C.108
   • D.114
   Show solution

   Each term is double the previous one, so after 56 comes 56 × 2 = 112.

6. Question 6Easy

   Find the next term: A, C, E, G, ?

   • A.ICorrect
   • B.H
   • C.K
   • D.J
   Show solution

   The letters skip one each time (A, _, C, _, E, _, G), so the next is I.

7. Question 7Easy

   Find the next term: 1, 4, 9, 16, 25, ?

   • A.42
   • B.36Correct
   • C.49
   • D.30
   Show solution

   The terms are perfect squares 1², 2², 3², 4², 5², so the next is 6² = 36.

8. Question 8Easy

   Find the missing term: 5, 10, ?, 20, 25.

   • A.15Correct
   • B.13
   • C.18
   • D.12
   Show solution

   The numbers go up by 5 each time, so the missing term is 15.

9. Question 9Easy

   Find the next term: B, D, F, H, ?

   • A.L
   • B.K
   • C.JCorrect
   • D.I
   Show solution

   The letters advance by two each time (B, D, F, H), so the next is J.

10. Question 10Easy

    If the letters of the word MASTER are arranged in alphabetical order, which letter is third from the left?

    • A.S
    • B.R
    • C.MCorrect
    • D.E
    Show solution

    MASTER sorted alphabetically is A, E, M, R, S, T, so the third letter is M.

11. Question 11Moderate

    Find the next term: AZ, BY, CX, ?

    • A.EW
    • B.DV
    • C.DWCorrect
    • D.DX
    Show solution

    The first letter moves forward A, B, C, D while the second moves backward Z, Y, X, W, so the next pair is DW.

12. Question 12Moderate

    Find the next term: 2, 5, 10, 17, 26, ?

    • A.35
    • B.37Correct
    • C.36
    • D.38
    Show solution

    The differences are 3, 5, 7, 9, growing by 2, so the next difference is 11 and the term is 26 + 11 = 37.

These are 12 of 13 letter and number series questions in the bank. Attempt the rest with instant feedback in the practice drills, or under a clock in the mock tests.