Advanced MathMediumSimplifying a numeric expression with powers of 2
Advanced Math practice question
What is the value of (2¹⁰ − 2⁹)/2⁸?
Answer: 2
2¹⁰ − 2⁹ = 2⁹(2 − 1) = 2⁹, and 2⁹/2⁸ = 2.
Common wrong answers
- If you answered 1
- 1 comes from 2⁹/2⁹, an exponent slip.
- If you answered 4
- 4 is 2¹⁰/2⁸, ignoring the subtraction.
- If you answered 512
- 512 is 2⁹, the numerator alone.
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