Find the value of `^(15)C_4 + ^(15)C_5 = `

Find the value of ^(14)C_5

Find the value of ^(20)C_4 + ^(20)C_5

Find the value of (a) ""^(15)C_(4) , (b) ""^(80)C_(2) ( c) ""^(15)C_(4) + ""^(15)C_(5) , (d) ""^(20)C_(16) - ""^(19)C_(16)

Find the values of: sin15^@

Find the value of sum_(r=1)^4 ^(21-r)C_4

Find the value: |15-2|

Find the value: |15-2|