RRB NTPC Mains or Stage 2 Model Paper 3 with solutions

Question : 61 of 120

Marks: +1, -0

f 54 + 43 = 2, 60 + 51 = 10, then 62 + 72 = ?

Solution:

5 – 4 = 1 ; 4 – 3 = 1 ⇒1 + 1 = 2

6 – 0 = 6 ; 5 – 1 = 4 ⇒6 + 4 = 10

6 – 2 = 4 ; 7 – 2 = 5 ⇒4 + 5 = 9

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