Tính : B = ( 75 . 54. 175 . 54 ) : ( 20 .25 .125 -625 . 75 )

Tính
g) B = ( 75 . 54. 175 . 54 ) : ( 20 .25 .125 -625 . 75 )
h) C = 5 . $4^{15}$ . 99 - 4.$3^{20}$ .$8^9$
i ) D = $2^0+2+2^2+...+2^{2001}$
j) E = $3+3^2+3^3+...+3^{100}$
k ) F = $5^{100}+5^{101}+...+5^{150}$