Exams › IBPS PO › Quantitative Aptitude

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

1. 25
2. 125
3. 625
4. 1625

Correct answer: 25

Solution

Since $3125=5^5$, we have $a=5$. Therefore, $5^{a-3}=5^{2}=25$. This is a direct application of exponent rules.

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