\left. \begin{array} { l l } { \text { The number of term in } ( x + y

1.	\left. \begin{array} { l l } { \text { The number of term in } ( x + y ) ^ { 100 } + ( x - y ) ^ { 100 } \text { is equal to } } \\ { \text { a) } 51 } \end{array} \right.
Answer» Both the expansion have 101 terms each.However, every term with the odd power of x will be cancelled. There are 50 such terms. => Hence, number of terms =101-50 =51 Option (a) is correct.

\left. \begin{array} { l l } { \text { The number of term in } ( x + y ) ^ { 100 } + ( x - y ) ^ { 100 } \text { is equal to } } \\ { \text { a) } 51 } \end{array} \right.

Answer»

Both the expansion have 101 terms each.However, every term with the odd power of x will be cancelled. There are 50 such terms.

=> Hence, number of terms =101-50 =51

Option (a) is correct.