/

AMC12 2021 A

AMC12 2021 A · Q1

AMC12 2021 A · Q1. It mainly tests Exponents & radicals, Fractions.

What is the value of\[2^{1+2+3}-(2^1+2^2+2^3)?\]
求\[2^{1+2+3}-(2^1+2^2+2^3)\]的值。
(A) 0 0
(B) 50 50
(C) 52 52
(D) 54 54
(E) 57 57
Answer
Correct choice: (B)
正确答案:(B)
Solution
We evaluate the given expression to get that \[2^{1+2+3}-(2^1+2^2+2^3)=2^6-(2^1+2^2+2^3)=64-2-4-8=50 \implies \boxed{\text{(B)}}\]
我们计算给定的表达式,得\[2^{1+2+3}-(2^1+2^2+2^3)=2^6-(2^1+2^2+2^3)=64-2-4-8=50 \implies \boxed{\text{(B)}}\]
Topics
Related Questions
Practice full AMC exams on amcdrill.
Try full-length practice and diagnostics at www.amcdrill.com.