• Answer of this question

    Which of the following numbers are not prefect cubes?(i) 216(ii) 128(i
    Upendra Narayan Sharma's image
    Upendra Narayan Sharma
    Q.1 (i) ans = 216 =2×2×2×3×3×3 yes 216 is perfect cube.
    (ii)ans=128=2×2×2×2×2×2×2 No 128 is not perfect cube. 
    (iii) 1000= 2×2×2×5×5×5 yes 1000 is a peefect cube
    (iv) 100= 2×2×5×5 so, 100 is not a perfect cube.
     (v) 46656= 2×2×2×2×2×2×3×3×3×3×3×3 yes 46656 is aperfect  cube
     

    Written on Dec. 14, 2020, 12:05 p.m.