arrow
arrow
arrow
Select the number that can replace the question mark (?) in the following series.18, 19, 22, 31, 58, ?
Question

Select the number that can replace the question mark (?) in the following series.
18, 19, 22, 31, 58, ?

A.

141

B.

132

C.

139

D.

128

Correct option is C

Given18, 19, 22, 31, 58, ?
Logic: Difference between consecutive term is 3 and its increasing power. (0 to 4)
19 - 18 = 1 (1 = 3⁰)
22 - 19 = 3 (3 = 3¹)
31 - 22 = 9 (9 = 3²)
58 - 31 = 27 (27 = 3³)
Next difference should be 3⁴ = 81
58 + 81 = 139
So, the next series is 139.
Thus, correct option is (c).

Free Tests

Free
Must Attempt

CBT-1 Full Mock Test 1

languageIcon English
  • pdpQsnIcon100 Questions
  • pdpsheetsIcon100 Marks
  • timerIcon90 Mins
languageIcon English
Free
Must Attempt

RRB NTPC Graduate Level PYP (Held on 5 Jun 2025 S1)

languageIcon English
  • pdpQsnIcon100 Questions
  • pdpsheetsIcon100 Marks
  • timerIcon90 Mins
languageIcon English
Free
Must Attempt

CBT-1 General Awareness Section Test 1

languageIcon English
  • pdpQsnIcon40 Questions
  • pdpsheetsIcon30 Marks
  • timerIcon25 Mins
languageIcon English
test-prime-package

Access ‘RRB NTPC’ Mock Tests with

  • 60000+ Mocks and Previous Year Papers
  • Unlimited Re-Attempts
  • Personalised Report Card
  • 500% Refund on Final Selection
  • Largest Community
students-icon
354k+ students have already unlocked exclusive benefits with Test Prime!
Our Plans
Monthsup-arrow