arrow
arrow
arrow
Which of the following number will replace the question mark (?) in the given series?55 , 104 , 140 , 165 , ?
Question

Which of the following number will replace the question mark (?) in the given series?

55 , 104 , 140 , 165 , ?

A.

181

B.

192

C.

185

D.

174

Correct option is A

Given: 55 , 104 , 140 , 165 , ?
Logic: Difference of two constitutive number is increasing from 49,36,25,16(Which are square number of respective number-: 7,6,5,4)
Explanation:
104-55=49
140-104=36
165-140=25
Similarly
?-165=16
?=16+165
?=181
Thus, Option A is the correct answer.

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

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 ‘RRB Group D’ Mock Tests with

  • 60000+ Mocks and Previous Year Papers
  • Unlimited Re-Attempts
  • Personalised Report Card
  • 500% Refund on Final Selection
  • Largest Community
students-icon
368k+ students have already unlocked exclusive benefits with Test Prime!
Our Plans
Monthsup-arrow