MathRevolution wrote:

[GMAT math practice question]

Which of the following is closest to \(\frac{(1+2^{18})}{(2^4+2^{10})}\)?

A. \(2^5\)

B. \(2^6\)

C. \(2^7\)

D. \(2^8\)

E. \(2^9\)

Since 1 is a lot less than 2^18 in the numerator, we can approximate the numerator as 2^18. Similarly, since 2^4 is a lot less than 2^10 in the denominator, we can approximate the denominator as 2^10. Thus, we have:

(1 + 2^18)/(2^4 + 2^10) ≈ 2^18/2^10 = 2^8

Answer: D

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