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

21 is related to 199 following a certain logic. Following the same logic, 16 is related to 154. To which of the given options is 19 related, following the same logic?

(NOTE: Operations should be performed on the whole numbers, without breaking down the numbers into their constituent digits. E.g. 13 - Operations on 13 such as adding/subtracting/multiplying etc. to 13 can be performed. Breaking down 13 into 1 and 3 and then performing mathematical operations on 1 and 3 is not allowed.)

This question was previously asked in
RRB Group D 2025 Question Paper (18-Aug-2026) (Shift 1)
The correct answer is

181

The logic is: (number × 9) + 10. Checking: 21 × 9 + 10 = 199, and 16 × 9 + 10 = 154, both matching the given values.

Applying the same logic to 19: 19 × 9 + 10 = 171 + 10 = 181.

Hence, 19 is related to 181.

Was this answer helpful?

Similar Questions

  1. In a certain code language, ‘TINY’ is coded as ‘2176’ and ‘ANTI’ is coded as ‘7618’. How is ‘A’ coded in that language?

  2. In a certain code language, ‘TANK’ is coded as ‘9356’ and ‘AUNT’ is coded as ‘6579’.

    How is ‘U’ coded in that language?

  3. In a certain code language, "JUMOC" is coded as "15" and "QYATXZR" is coded as "21". What is the code for "VTGZXAIW" in that language?

  4. What will come in the place of '?' in the following equation, if '+' and '-' are interchanged and '×' and '÷' are interchanged?

    245 ÷ 64 × 448 - 562 + 381 = ?

  5. What will come in place of the question mark (?) in the following equation, if '+' and '÷' are interchanged and '×' and '-' are interchanged?

    23 - 4 + 2 × 4 ÷ 6 = ?

  6. 17 is related to 68 following a certain logic. Following the same logic, 29 is related to 116. To which of the given options is 41 related, following the same logic?

    (NOTE: Operations should be performed on the whole numbers, without breaking down the numbers into their constituent digits. E.g. 13 - Operations on 13 such as adding/subtracting/multiplying etc. to 13 can be performed. Breaking down 13 into 1 and 3 and then performing mathematical operations on 1 and 3 is not allowed.)

  7. In a certain code language "KBNY" is coded as "43" and "RBXU" is coded as "30". What is the code for "WIJM" in the given language?

  8. What will come in place of the question mark '?' in the following equation, if '+' and '-' are interchanged and '×' and '÷' are interchanged? 35 × 5 ÷ 7 - 11 + 9 = ?

  9. If + means -, - means ×, × means ÷, ÷ means +, then what will come in place of the question mark (?) in the following equation?

    61 - 5 + 231 × 21 ÷ 33 = ?

  10. If + means -, - means ×, × means ÷, ÷ means +, then what will come in place of the question mark (?) in the following equation?

    11 - 3 ÷ 14 + 15 × 5 = ?


Important Questions from Coding Decoding Based on Numbers

  1. In a certain code language, 'IT' is written as '58', 'SAD' is written as '48'. What is the code for 'FISH' in that code language?

  2. If 31 L 31 J 5 = 186 and 47 J 2 L 43 = 137, then 52 L 64 J 3 = ?

  3. If R is coded as 4, M is coded as 1, N is coded as 5, S is coded as 8, Q is coded as 0, L is coded as 6 and P is coded as 3, then what is the coded form of SMLRP ?

  4. If in a certain code, 6723 is coded as 8901, how is 2435 coded in that language?

  5. In a certain code language, 'CHOICE' is written as '53', 'CHARGE' is written as '52', how will 'CHANCE' be written in that language?

Need Expert Advice?
Upcoming Exams
RRB JE
October 27, 2026
RRB ALP
November 03, 2026
Test Series
RRB Group D img
Railways
RRB Group D Mock Test Series 2026 (Latest Pattern)
1198 Tests 1 Tests Free
1854 Attempts
4.1(107)
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