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

Select the related word/letters/numbers from the given alternatives:

12 : 39 : : 15 : ?

This question was previously asked in
SSC CGL 2016 (Tier 1) Previous Year Question Paper (11-Sep-2016) (Shift 2)
The correct answer is

48

The pattern is based on multiplying the first number by 3 and then adding 3 to the result. Let's see how it works:

For 12: (12 * 3) + 3 = 39

Applying the same pattern to 15:

(15 * 3) + 3 = 48

Therefore, the related number is 48.

This shows a consistent mathematical relationship between the pairs.

Was this answer helpful?

Similar Questions

  1. Select the number from among the given options that can replace the question mark (?) in the following series.

    240, 120, ?, 180, 360, 900

  2. Select the number from among the given options that can replace the question mark (?) in the following series.

    37, 52, 74, 104, 143, ?

  3. Which of the following numbers will replace the question mark (?) in the given series?

    31, ?, 40, 49, 61, 76

  4. Which number will replace the question mark (?) in the following series?

    12, 25, 51, 103, ?, 415, 831

  5. Which of the following numbers will replace the question mark (?) in the given series?

    25, 15, ?, −5, −15

  6. Select the related word/letters/numbers from the alternatives:

    01 : 36 : : 02 : ?

  7. A series is given, with one term missing. Choose amongst the given responses the meaningful one:

    206, 221, 251, 296, ?, 431

  8. In this question, some equations are solved on the basis of a certain system. On the same basis find out the correct answer from amongst the four alternatives for the unsolved equation:

    53 - 34 = 5334

    65 - 46 = 6456

    75 - 24 = ?

  9. A series is given, with one term missing. Choose the correct alternative from the given ones that will complete the series.

    4, 9, 16, 25, 36, ?

  10. In this question, some equations are solved on the basis of a certain system. On the same basis find out the correct answer from amongst the four alternatives for the unsolved equation.

    6 x 2 x 9 = 269
    8 x 7 x 1 = 781
    4 x 1 x 3 = ?


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
7885 Attempts
4.2(907)
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