All Exams Test series for 1 year @ ₹349 only
Question

What should come at the place of question mark? 1, 8, 27, 64, 125, ?, 343

This question was previously asked in
SSC CGL 2025 Tier 2 Paper 1 Question Paper (19-Jan-2026)
The correct answer is
216

Identify Number Sequence Pattern

The question presents a number sequence: 1, 8, 27, 64, 125, ?, 343.

We need to find the missing number represented by the question mark.

Analyze the Sequence Terms

Let's examine the relationship between the numbers in the sequence:

  • The first term is 1, which is $1^3$ (1 x 1 x 1).
  • The second term is 8, which is $2^3$ (2 x 2 x 2).
  • The third term is 27, which is $3^3$ (3 x 3 x 3).
  • The fourth term is 64, which is $4^3$ (4 x 4 x 4).
  • The fifth term is 125, which is $5^3$ (5 x 5 x 5).
  • The seventh term is 343, which is $7^3$ (7 x 7 x 7).

Determine the Missing Term's Position

The sequence follows the pattern of cubes of consecutive positive integers ($n^3$). The terms correspond to $n=1, 2, 3, 4, 5, ?, 7$.

The missing term is in the 6th position, so it should correspond to $n=6$.

Calculate the Missing Number

To find the missing number, we calculate the cube of 6:

$ 6^3 = 6 \times 6 \times 6 = 216 $

Therefore, the missing number in the sequence is 216.

Was this answer helpful?

Similar Questions

  1. What is the next number in the series?
    100, 50, 25, ___

  2. Complete the series.
    2, 4, 7, 11, 16, ?
  3. What should come at the place of question mark?
    2, 5, 10, 17, 26, ?
  4. What should come in place of the question mark '?' in the following number series?
    $45, 40, 50, ?, 55, 30$
  5. Complete the series.
    $25, 36, 49, 64, 81, ?$
  6. What should come at the place of question mark? : $98, 90, 82, 74, ?, 58$
  7. What should come in place of the question mark '?' in the following number series?

    12, 6, 0, -6, ?, -18
  8. Complete the series.
    10, 20, 18, 36, 34,68 ________

  9. What should come in place of the question mark '?' in the following number series?

    76, 80, 71, 87, 62, ?
  10. In the following number series, a wrong number is given. Find out the WRONG number.

    9, 19, 39, 78, 159, 319

Important Questions from Number Series

  1. What will come in place of question mark (?) in the following number series?

    2, 5, 11, 23, 44, 77, ?

  2. What will come in place of question mark (?) in the following number series?

    31, 32, 36, ?, 61, 86

  3. What will come in the place of question mark (?) in the following number series?

    3, 6, 18, ?, 630, 6930

  4. What should come in place of the question mark ‘?’ in the following number series?

    60, 40, 50, ?, 180, 460

  5. A series is given with one term wrong. Select that wrong term from the given alternatives.

    J12, M24, P48, S96, U192

Need Expert Advice?
Upcoming Exams
UPSSSC PET
October 25, 2026
SSC JE
November 02, 2026
SSC CPO
November 20, 2026
SSC CHSL
November 30, 2026
Test Series
SSC CGL img
SSC
SSC CGL (Tier I + Tier II) 2026 Mock Test Series - Latest Pattern
2503 Tests 6 Tests Free
7846 Attempts
4.2(906)
English, Hindi

Start Your Preparation with Prepp Mobile App

Download the app from Google Play & App Store
Download the app from Google Play & App Store
Prepp Mobile App