H.C.F of 4 * 27 * 3125, 8 * 9 * 25 * 7 and 16 * 81 * 5 * 11 * 49 is:  Choices.
A) 240 B) 790 C) 840 D) 180 E) 120
Explanation:   4 * 27 * 3125 = 2^2 * 3^3 * 5^5;   8 * 9 * 25 * 7 = 2^3 * 3^2 * 5^2 * 7;   16 * 81 * 5 * 11 * 49 = 2^4 * 3^4 * 5 * 7^2 * 11   H.C.F = 2^2 * 3^2 * 5 = 180.   Answer: Option 180
<result>D</result>
H.C.F of 4 * 27 * 3125, 8 * 9 * 25 * 7 and 16 * 81 * 5 * 11 * 49 is: