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The sum ""^(40)C(0) + ""^(40)C(1)+""^(40...

The sum `""^(40)C_(0) + ""^(40)C_(1)+""^(40)C_(2)+…+""^(40)C_(20) `is equal to

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The value of ""^(40)C_(0) xx ""^(100)C_(40) _ ""^(40)C_(1) xx ""^(99)C_(40) + ""^(40)C_(2) xx ""^(98)C_(40) -"……." + ""^(40)C_(40) xx ""^(60)C_(40) is equal to "____" .

-40^@C is equal to ?

The value of .^(40)C_(0) xx .^(100)C_(40) - .^(40)C_(1) xx .^(99)C_(40) + .^(40)C_(2) xx .^(98)C_(40) "……." + .^(40)C_(40) xx .^(60)C_(40) is equal to "____" .

The sum 2 xx ""^(40)C_(2) + 6 xx ""^(40)C_(3) + 12 xx ""^(40)C_(4) + 20 xx ""^(40)C_(5) + "…." + 1560 xx ""^(40)C_(40) is divisible by

The sum 2 xx ""^(40)C_(2) + 6 xx ""^(40)C_(3) + 12 xx ""^(40)C_(4) + 20 xx ""^(40)C_(5) + "…." + 1560 xx ""^(40)C_(40) is divisible by

The value of ""^(40) C_(31) + sum _(r = 0)^(10) ""^(40 + r) C_(10 +r) is equal to

The value of ""^(40) C_(31) + sum _(r = 0)^(10) ""^(40 + r) C_(10 +r) is equal to