arrow
arrow
arrow
Study the given pattern carefully and select the number that can replace the question mark (?) in it.​
Question

Study the given pattern carefully and select the number that can replace the question mark (?) in it.

A.

10

B.

21

C.

12

D.

11

Correct option is A

Given: 
Logic: Sum of square box  Numbers = Sum of the square of the star Numbers
In Figure 1:
12 + 8 = (2)2+ (4)2
20 = 4 + 16
20 = 20
In figure 2:
6 + 4 = (3)2+ (1)2
10 = 9 + 1
10 = 10
Similarly, In Figure 3:
? + 19 = (5)2+ (2)2
? + 19 = 25 + 4
? = 29 -19
? = 10
So, the missing number is 10.
Thus, the correct option is (a) 

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
353k+ students have already unlocked exclusive benefits with Test Prime!
Our Plans
Monthsup-arrow