标题:
JULY JJ[转自我看机经]
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作者:
smart
时间:
2003-7-30 01:16
标题:
JULY JJ[转自我看机经]
18.(4的9次方)乘以5的17次方的结果是几位数?
19. x1=3,xn+1=2xn - 1, 求 x20 - x19
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