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RRB NTPC Mains or Stage 2 Model Paper 3 with solutions

Question : 67 of 120

Marks: +1, -0

Solution:

Concept:

In each column, the bottom number is half the sum of the four numbers above it.

Explanation:

Column 1:

10+12+4+10=36

and

\frac{36}{2}=18

Column 2:

11+12+12+5=40

and

\frac{40}{2}=20

Column 3:

15+8+10+13=46

So the missing number is

\frac{46}{2}=23

Answer:

The missing number is

23

, so the correct option is C.

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