`i^(-39)`

Calculate the number of neutrons the following elements contain and state the formula used. (i) ""_(19)K^(39) " " (ii) ""_(9)F^(19) " " (iii)""_(4)Be^(9) " " (iv) ""_(13)Al^(27)

Simplify: (i) (-4/7) xx (21/20) , (ii) (-13)/9 xx (-21)/(-39)

The remainder when 2^(39) is divided by 39 is :

The number of values of 'r' satisfying the equation ""^(39)C_(3r-1)- ""^(39)C_(r^(2) )= ""^(39)C_(r^(2)-1) - ""^(39)C_(3r) is

The number of values of r satisfying the equation ""^(39)C_(3r-1) -""^(39)C_(r^2) = ""^(39)C_(r^2-1) -""^(39)C_(3r) is

The number of values of 'r' satisfying the equation ""^(39)C_(3r-1)- ""^(39)C_(r^(2) )= ""^(39)C_(r^(2)-1) - ""^(39)C_(3r) is

The number of values of 'r' satisfying the equation ""^(39)C_(3r-1)- ""^(39)C_(r^(2) )= ""^(39)C_(r^(2)-1) - ""^(39)C_(3r) is

(i) 26/(39), (ii) (16)/(72) (iii) (198)/(462)

What is the value of z^(2)+(bar(z))^(2)+2|z|^(2), if z=3+2i?(A)36(B)81+12i(C)39(D)40+12i