Aptitude · Q1

Surds And Indices

Competitive Exams · Aptitude · question 1

Q1

(17)3.5 × (17)? = 178

A.

2.29

B.

2.75

C.

4.25

D.

4.5

Answer

Answer: Option D

Solution

Answer: Option D

Solution:

Let (17)^3.5 × (17)^x = 17⁸
Then, (17)^{3.5 + x} = 17⁸
∴ 3.5 + x = 8
⇒ x = (8 - 3.5)
⇒ x = 4.5

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