arrow
arrow
arrow
Select the option that will fill in the blank and complete the given series.13, 17, 25, 37, 53, __________
Question

Select the option that will fill in the blank and complete the given series.

13, 17, 25, 37, 53, __________

A.

69

B.

63

C.

73

D.

65

Correct option is C

Given: 13, 17, 25, 37, 53, ?
Logic:  The differences between consecutive terms is increasing by 4 each time.
17 - 13 = 4
25 - 17 = 8
37 - 25 = 12
53 - 37 = 16
The differences are: 4, 8, 12, 16.
This pattern is increasing by 4 each time.
The next difference should be 16 + 4 = 20.
53 + 20 = 73
Thus, the next term in the series is 73.
Thus, the correct answer is (c) 73.

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 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
368k+ students have already unlocked exclusive benefits with Test Prime!
Our Plans
Monthsup-arrow