Find the smallest number which must be subtracted from the following to make them perfect cubes .What are the corresponding cube roots?
A. 350
B. 833
C. 1400
D. 1730
Correct Answer - A
`(a)` First arrange `12` persons `A_(4),A_(5),….A_(15)` in `"^(15)P_(12)` ways
There remains `3` places. Keep `A_(1)` in the first place and arrange `A_(2)`, `A_(3)` in the remaining two...