`(3^@+4^@+5^@)^@` find the value​

Find the value of 5^(4)

if U = {1, 2, 3, 4, 5, 6, 7, 8, 9}, B = { 2, 4, 6, 8} and C = {3, 4, 5, 6} then find the value of (B - C)'.

If U = {1, 2, 3, 4, 5, 6, 7, 8, 9}, B = { 2, 4, 6, 8} and C = {3, 4, 5, 6} then find the value of B nn C' .

If U = {1, 2, 3, 4, 5, 6, 7, 8, 9}, B = { 2, 4, 6, 8} and C = {3, 4, 5, 6} then find the value of (B -C)' .

If |[ 4 , x ] , [ -3 , 5 ]| = 8 , find the value of x

If | [ 4 , m ] , [ -3 , 5 ] | = 8 , find the value of m

If the slope of a line passing through the points (x,1) and (-3,5) is (4)/(3) , find the value of x .

If 4:(k+3)::5:(k+5) find the value of k