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Surds and Indices

Surds and Indices - General Aptitude

Surds and Indices - Formulas
Surds and Indices - General Questions

If 5^a = 3125, then the value of 5^{(a - 3)} is:

A 25

B 125

C 625

D 1625

ANS:A - 25

5^a = 3125 5^a = 5⁵ a = 5. 5^{(a - 3)} = 5^{(5 - 3)} = 5² = 25.

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