[計量] How many positive integers less ...
How many positive integers less than 20 are equal to
the sum of a pisitive multiple of 3 and a positive multiple of 4 ?
A) Two
B) Five
C) Seven
D) Ten
E) Nineteen
答案 D。
我 ... 看不懂題目的意思 ... 囧"
請高手指點!
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09/30 16:43, , 1F
09/30 16:43, 1F
→
09/30 16:44, , 2F
09/30 16:44, 2F
→
09/30 16:46, , 3F
09/30 16:46, 3F
→
09/30 16:46, , 4F
09/30 16:46, 4F
→
09/30 16:50, , 5F
09/30 16:50, 5F
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