RRB NTPC Mains or Stage 2 Model Paper 10 with solutions

Question : 8 of 120

Marks: +1, -0

What will come in place of both the question marks (?) in the following question?

( ?) ^{ 2.3 }/8-=2/(?)^{1.7}

Solution:

(d)

(?) ^{2.3}=2/(?)^{1.7}

⇒ (?)^{2.3 + 1.7} = 16 ⇒ (?)^4 = 16 = (2)^4

∴ ? = 2

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