37
The sum of coefficients of the two middle terms in the expansion of $(1+x)^{2 n-1}$ is equal to ${ }^{2 n-1} C_n$.
A
TRUE
B
FALSE
38
The last two digits of the numbers $3^{400}$ are 01 .
A
TRUE
B
FALSE
39
If the expansion of $\left(x-\frac{1}{x^2}\right)^{2 n}$ contains a term independent of $x$, then $n$ is a multiple of 2.
A
TRUE
B
FALSE
40
The number of terms in the expansion of $(a+b)^n$, where $n \in N$, is one less than the power $n$.
A
TRUE
B
FALSE