Evaluate `^13C_6+^13C_5``

Evaluate : ""^(13)C_(10)

Evaluate (i) ""^(10)C_(4)+""^(10)C_(5) (ii) ""^(13)C_(6)+ ""^(13)C_(5) (iii) ""^(19)C_(17)+ ""^(19)C_(18) .

The value of 13C_7+13C_8+13C_9+13C_10+13C_11+13C_12+13C_13 is equal to

The value of .^(13)C_(7)+.^(13)C_(8)+.^(13)C_(9)+.^(13)C_(10)+.^(13)C_(11)+.^(13)C_(12)+.^(13)C_(13) is equal to

Evaluate: (6/13)^(10)-:[(6/13)^(5)]^(2)=

Evaluate : (13/14)^(5)-:(--------)^(2)=(13/14)^(3)

If A is in the fourth quadrant and cosA=(5)/(13) , find the value of (13sinA+5secA)/(5tanA+6" cosec A") :