a,A=3^10.(11+5) / 3^9.2^4
=3^10.16/3^9.2^4
= 3.2^4 / 2^4
=3
b, B=2^10(13+6^5) / 2^8.10^4
= 2^10 . 7789/2^8 . 10^4
=2^2 . 7789 / 10^4
= 7789/2500
c,C=11.3^29-3^30 / (2.3^14)^2
=3^29(11-3) / 2^2 . 3^28
=3.8/4
=6
d,D=(2^3 . 3^2)^3 . (2 . 3^3)^2 / (2^2 . 3^3)^4
= 2^9 . 3^6 . 2^2 . 3^6 / 2^8 . 3^12
=2^11 . 3^12 / 2^8 . 3^12
=2^3
=8