SSC CPO SI and ASI Model Paper 4

Question : 4 of 200

Marks: +1, -0

10 : 99 : : 9 : ?

Solution:

(2) As, 10 : 99 means 10 :

(10^2 – 1)

Similarly, 9 : ? means 9 :

(9^2 – 1)

i.e. 9 : 80

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