Free Practice Question
PS · Problem Solving
555-605
Exponents/Powers
What is the units digit of ?
Answer Choices
Correct answer marked belowA
2
B
4
6
Correct
D
8
E
9
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Explanation
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Official Explanation
Official
To find the units digit of , we first evaluate the exponent. We have . The units digit of powers of 4 follows a pattern: {4, 6}. Specifically, the units digit of is…
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Comments
2
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G
GailMar 22, 2024
Good question
J
JannatJun 1, 2024
Great!
What this question tests
What it tests
Your grasp of exponent rules — multiplying and dividing powers, power-of-a-power, and negative/zero exponents.
Common trap
Adding exponents when multiplying bases that have the same exponent, or confusing (x^a)^b with x^(a·b).
Details
Difficulty
555-605
Type
PS
Category