Fill in the blanks:
Median of the numbers 1,2,3,……,n, when n is odd, is …….. .

Fill in the blanks: 1 kg f = ___ N.

Fill in the blank spaces. If 3^(n)=729 then

Fill in the blanks 2n chromosome number of butterfly is _______.

Fill in the blanks: If A is any square matrix then A-A' is always n ……… matrix.

Fill in the blanks: If A is any square matrix then AA' is always n ……… matrix.

Fill in the blanks : If A is a matrix of order 3xx3 , then the number of minors in determinant of A is …………… .

Fill in the blanks: The value of the expression tan((sin^-1 x + cos^-1x)/2)) , when x = sqrt3/2 is ………

The sum of the first n odd number is :