PP-Test2-DS-112

[chris8888]

112. 11432-!-item-!-187;#058&008149
If m and n are positive integers and mn = k, is m + n = k + 1 ?

(1) m = 1

(2) k is a prime number.
忘記去給他mn=k計算一下了, 由於k is prime number, 所以m=1 / n=k or n=1 / m=k
都會造成1+k = k+1 sufficient
我承認我豬頭, 竟然算錯. 考試要頭腦清醒, 不可以用看的, 要動筆一下.

粗心大意