Answers

✨ Jawaban Terbaik ✨

令a = 3x,b = 5x
3x < (2/3)(5x-4)
x > 8
a = 27,30,33...99
99 = 27+(n-1)3
n = 25

b = 45,50,...95
95 = 45+(n-1)5
n = 11
因為b最多只有11個數,所以a也只能11個數

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