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AMC8 2026

AMC8 2026 · Q1

AMC8 2026 · Q1. It mainly tests Arithmetic misc.

What is the value of the following expression? $1+2-3+4+5-6+7+8-9+10+11-12$
以下表达式的值是多少? $1+2-3+4+5-6+7+8-9+10+11-12$
(A) 18 18
(B) 21 21
(C) 24 24
(D) 27 27
(E) 30 30
Answer
Correct choice: (A)
正确答案:(A)
Solution
$1+2-3+4+5-6+7+8-9+10+11-12$ = $\boxed{18}$
$1+2-3+4+5-6+7+8-9+10+11-12 = \boxed{18}$
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