Slove the following equations.
1.
nC3=5nC1
2.
nC1+nC2=3n
3.
2nC1+nC0=9
4.
nC(n-2)=28
Simplify the following expressions.
5.
(n+2)C3-nC3
6.
(n-1)C(n-2)*(n-2)C(n-4)
MATH -- solve factorial..急問!
2010-08-27 8:34 am
回答 (3)
2010-08-28 1:35 am
2010-08-27 6:21 pm
nCr係n choose r = n!/r!(n-r)!)阿
2010-08-27 5:59 pm
C係咩? 點解有x又有C?2 unknowns?
收錄日期: 2021-04-22 00:51:21
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