arrow
arrow
arrow
What is the missing number '?' in the series.7, 8, 18, 57, ?, 1165​​
Question

What is the missing number '?' in the series.
7, 8, 18, 57, ?, 1165​​

A.

228

B.

232

C.

174

D.

224

Correct option is B

Given: 7, 8, 18, 57, ?, 1165
Logic: (Previous number ×\times Natural number) + Natural number = Next number
×\times​ 1 + 1 = 8
×\times​ 2 + 2 = 18
18 ×\times​ 3 + 3 = 57
57 ×\times​ 4 + 4 = 232
232 ×\times​ 5 + 5 = 1165
The missing number is 232.
Thus, correct option is (b).

Free Tests

Free
Must Attempt

Rajasthan GK Subject Test :03

languageIcon English
  • pdpQsnIcon10 Questions
  • pdpsheetsIcon10 Marks
  • timerIcon8 Mins
languageIcon English
Free
Must Attempt

CBT-1 Full Mock Test 1

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

RRB NTPC UG Level PYP (Held on 7 Aug 2025 S1)

languageIcon English
  • pdpQsnIcon100 Questions
  • pdpsheetsIcon100 Marks
  • timerIcon90 Mins
languageIcon English
test-prime-package

Access ‘Rajasthan Jail Prahari’ Mock Tests with

  • 60000+ Mocks and Previous Year Papers
  • Unlimited Re-Attempts
  • Personalised Report Card
  • 500% Refund on Final Selection
  • Largest Community
students-icon
383k+ students have already unlocked exclusive benefits with Test Prime!
Our Plans
Monthsup-arrow