Practice Test Discussion

Q)

What will come in place of question mark (?) in the following number series?

1338, 447, 150, 51, 18, ?

[RBI, 2015]

    • Explanation

    From the above question,

     we have 

    ⇒ 1338÷3+1=447

    ⇒ 447÷3+1=150

    ⇒ 150÷3+1=51

    ⇒ 51÷3+1=18

    ⇒ 18÷3+1=6+1=7

    Hence, Option A is correct.

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    Number series

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