What are the last two digits of the number 7^48?

Correct answer marked below

1

Correct

B

7

C

27

D

43

E

49

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Official Explanation

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The last two digits of the powers of 7 form a repeating cycle of 4: 07, 49, 43, 01. Observing this pattern, we find that…

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R

RomanJan 24, 2024

Good question

A

ArunFeb 24, 2025

Amazing

What this question tests

Your grasp of exponent rules — multiplying and dividing powers, power-of-a-power, and negative/zero exponents.

Adding exponents when multiplying bases that have the same exponent, or confusing (x^a)^b with x^(a·b).

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