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Algebra

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Joined:	30 Aug 2007
Post:	15

1 Jan 2008 23:09:08 IST

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binomial questions....plz help me out.....

None

Q1.IN THE EXPANSION   OF (1+X)^N(1+Y)^N(1+Z)^N   ,THE SUM OF THE COFFIENCIENTS OF THE TERMS OF DEGREE R IS
A.(NcR)^3    B.3.NcR C.3NcR
D.Nc3R

Q2.XYcO - (X-1)(Y-1)c1 + (X-2)(Y-2)c1 +(X-3)(Y-3)c3 +.............+ (-1)^N(X-N)(Y-N)cN
EQUALS....
A.XY *2^N    B.NXY    C.XY     D. NONE OF THESE

Q3.THE TOTAL NO.OF DISSIMILAR TERMS IN THE EXPANSION OF (X1+X2+X3+..........XN)^3    IS....
A.N^3       B.(N^3 + 3N^2)/4         C.{N(N+1)(N+2)}/6         D.(N^2(N+1)^2)/4

PLZ BUDDIES HELP ME OUT......

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