If `|A^(-1)|=5,` then find the value of `|A|.`

If A=[(2, 3),(5,-2)] be such that A^(-1)=k\ A , then find the value of k .

If log_(4)m=1.5 , then find the value of m.

If "^(2n+1)P_(n-1):^(2n-1)P_n=3:5, then find the value of n .

1) Find the value 5^3

If .^(15)C_(r): .^(15)C_(R-1) = 11:5 , then find the value of 'r'.

If (a-b), a and (a+b) are zeroes of 2x^(3)-12x^(2)+5x-1 , then find the value of a.

If (1+sint)(1+cost)=5/4 then find the value of (1-sint)(1-cost)dot

There are n AM's between 1 & 31 such that 7th mean : (n-1)th mean = 5:9 , then find the value of n

If |A| = 2 and A = | (2x, 6) , (5x, 1)| then find the value of x

If Delta_r =|[2^(r-1) ,2.3^(r-1), 4.5^(r-1)],[alpha,beta,gamma],[2^n-1, 3^n-1, 5^n-1]| , then find the value of Delta