单选题The sum of the non-prime numbers between 40 and 50, non-inclusive, isA 131B 176C 274D 405E 495
题目
单选题
The sum of the non-prime numbers between 40 and 50, non-inclusive, is
A
131
B
176
C
274
D
405
E
495
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参考答案和解析
正确答案：
B
解析：
40到50间的非质数为42, 44, 45, 46, 48, and 49，相加为274，选C项。
40到50间的非质数为42, 44, 45, 46, 48, and 49，相加为274，选C项。