[問題]考古題FROM26 Q22

[w1956115]

If b is the product of two consecuitive positive integers, is b divisible by 6 ?
(1)b is divisible by 4
(2) b is divisible by 3

答案視B 但我覺得要有2的倍數才可以被6整除阿....??

[waleaaa]

其實題目說b為兩個連續正整數的乘積，就代表b可被2整除了...
因為任兩個連續正整數必有一個為雙數~
所以只要知道b可以被3整除即可　故選B

[w1956115]

瞭了 謝謝!