SSC CHSL 5 Aug 2021 Shift 3 Paper

Section: General Intelligence

Question : 50 of 100

Marks: +1, -0

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

Solution:

Pattern of the number series is, In first row,

13 × 2+8 × 3=26+24=50

In second row,

12 × 2+5 × 3=24+15=39

Similarly, In third row,

\;15 × 2+? × 3=51

⇒\;30+? × 3=51

⇒\;? × 3=51-30

⇒\;? × 3=21

∴ \;?=\;{21}/{3}=7

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