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The value of sum(r=0)^nsum(p=0)^r nr*rC...

The value of `sum_(r=0)^nsum_(p=0)^r n_r*rC_p`

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The value of sum_(r=1)^n(sum_(p=0)^(r-1) ^nC_r ^rC_p 2^p) is equal to

The value of sum_(r=1)^n(sum_(p=0)^(r-1) ^nC_r ^rC_p 2^p) is equal to (a) 4^(n)-3^(n)+1 (b) 4^(n)-3^(n)-1 (c) 4^(n)-3^(n)+2 (d) 4^(n)-3^(n)

The value of sum_(r=1)^n(sum_(p=0)^(r-1) ^nC_r ^rC_p 2^p) is equal to (a) 4^(n)-3^(n)+1 (b) 4^(n)-3^(n)-1 (c) 4^(n)-3^(n)+2 (d) 4^(n)-3^(n)

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The valur of sum_(r=0)^(n) sum_(p=0)^(r) ""^(n)C_(r) . ""^(r)C_(p) is equal to

The value of sum_(r=1)^(n)(sum_(p=0)^(n)nC_(r)^(r)C_(p)2^(p)) is equal to

The value of sum_(r=0)^nsum_(s=0)^nsum_(t=0)^nsum_(u=0)^n(1) is

The value of sum_(n=0)^(1)sum_(i=1r<=pi)^( n)nC_(r)sC_(r) is

The value of sum_(r=0)^(40)rC(40,r)C(30,r)