ACT · Question of the Day

ACT Question of the Day

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Sunday, October 11, 2026

What is $2^{-3}$ ?

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Question of the Day

Answer today's ACT question, reveal the full explanation, then keep the streak going with a new question every day.

What is $2^{-3}$ ?

$-1/8$
$-8$
$8$
$1/8$ (correct answer)

Explanation: The negative exponent rule states that 2⁻³ = 1/2³. We take the reciprocal of the base and make the exponent positive: 1/2³ = 1/8. A negative exponent creates a fraction, not a negative number. Choice B incorrectly gives -8, confusing negative exponents with negative values.