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

878 × m

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8.78 × Kg

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87.8 × Kg

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8.78 × Kg

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Solution

The correct option is D
8.78 × Kg

5^a= 3125⇒ 5^a= 5⁵ ⇒ a= 5

∴5^{(a- 3)}
= 5^{(5 - 3)}
= 5²= 25

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