RRB RPF RPSF SI and CONS Model Papers 6 with solutions

Question : 3 of 120

Marks: +1, -0

Which is the smallest number among the following?

Solution:

(3) Hence, Option (3) is the smallest
1.

[ (5^{-2} )^{-2} ]^{-2}=5^{-8}= {1}/{5^{8}}

= {1}/{625 × 625}

[ (5^{-2} )^{2} ]^{-2} =5^8

[ (2^{-5} )^{-2} ]^{-2}

=2^{-20}= {1}/{2^{20}}

= {1}/{1024 × 1024}

[ (2^{-5} )^{2}] ^{-2} =2^20

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