The H.C.F. of 4 × 27 × 3125, 8 × 9 × 25 × 7 & 16 × 81 × 5 × 11 × 49 is ____.
180
360
540
1260
480
4 × 27 × 3175 = 22 × 33 × 55 8 × 9 × 25 × 7 = 23 × 32 × 52 × 7 16 × 81 × 5 × 11 × 49 = 24 × 34 × 5 × 72 × 11 H.C.F. = 22 × 32 × 5 = 180.