Evaluate `.^61C_57-^60C_56`

Evaluate: 61.56 div 6.48

Evaluate the 32.61 + 128.561

Evaluate the 27.85 - 19.61

Evaluate ^(47)C_(4)+sum_(j=0)^(3)""^(50-j)C_(3)+sum_(k=0)^(5) ""^(56-k)C_(53-k) .

Find the value of :^50C_4+sum_(r=1)^6 .^(56-r)C_3.

The value of ""^(50)C_4 + underset(r=1) overset(6)sum ""^(56-r)C_3 is

The value of ""^(50)C_(4)+sum_(r=1)^(6)""^(56-r)C_(3) , is

The value of (""^(47)C_(4))/(""^(57)C_(4))+sum_(j=0)^(3)(""^(50-j)C_(3))/(""^(57)C_(53))+sum_(j=0)^(5)""^((56-k)C_(53-k))/(""^(57)C_(4)) is :

The angles of a quadrilateral are x^(@),60^(@),60^(@) "and" (5pi^(c))/(6) , Find x.

Consider a prototypical fullerene, C_(60) Let, a = Number of 5 -membered rings: b = Number of 6 -membered rings c = Number of pi bonds in C_(60) Find the value of (3a-2b+c)