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Question

If 132122=n125, then n is equal to
  1. 2
  2. 3
  3. 1
  4. 4
  5. 5

A
1
B
2
C
3
D
4
E
5
Solution
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The correct option is C 3
Given, 132122=n125
We have 132122=169144
=25
=5
And n125=53/n
When we equate those two, we get 51=53/n
Therefore by comparing powers, we get 3n=1 n=3

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