SSC CHSL 16th October 2020 Shift-3

Question 46

Select the option that is related to the third number in the same way as the second number is related to the first number.

9 : 72 :: 5 : ?

Solution

$$9\times8=72$$

Second number is the product of first number and number before first number.

Similarly, the required number = $$5\times4=20$$

Hence, the correct answer is Option D


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