The coefficient of `a^3b^6c` in the expansionof `(2a-b+c)^10` is (A) 6720 (B) 840 (C) 10 (D) none of these

Coefficient of a^(2)b^(5) in the expansion of (a+b)^(3)(a-2b)^(4) is (A) 24 (B) 96(C)-24 (D) None of these

Find the coefficient of a^(2)b^(3)c^(4)d in the expansion of (a-b-c+d)^(10) .

Find the coefficient of x^2 y^3 z^4 in the expansion of (ax -by +cx)^9 (b) a^2 b^3 c^4 d in the expansion of (a -b-c +d)^10

The coefficient of x^(8)y^(10) in the expansion of (x+y)^(18) is ^(18)C_(8) b.^(18)P_(10) c.2^(18) d.none of these

If the sum of the coefficients in the expansion of (1-3x+10x^(2))^(n) isa and if the sum of the coefficients in the expansion of (1+x^(2))^(n) isb, then a=3b b.a=b^(3) c.b=a^(3) d.none of these

The coefficient of x^(4) in (x/2-3/x^(2))^(10) is (405)/(256) b.(504)/(259) c.(450)/(263) d.none of these

" The coefficient of "a^(4)b^(3)c^(2)d" in "(a-b+c-d)^(10)" is "k" then "(k)/(100)=

In the expansion of (a+b+c)^10 (A) total number of terms in 66 (B) coefficient of a^8 bc is 90 (C) coefficient of a^4b^5c^3 is 0 (D) none of these

If the sum of the coefficients in the expansion of (a+b)^(n) is 4096, then the greatest coefficient in the expansion is 924 b.792c 1594d.none of these

If (x-1)/(x)=3, then the value of 1+(1)/(x^(2)) is (a) 9(b) 10(c)11 (d) None of these