MBA Exam

If log(base4)(x + 2y) + log(base4)(x â€“ 2y) = 1, then the minimum value of |x| â€“ |y| is

1) sqrt2
2) sqrt3
3) 2sqrt3
4) sqrt5

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MBA Other Question

Ten books are arranged in a row on a bookshelf. A student has to select three out of these ten books in such a way that no two books selected by him must have been lying adjacently. In how many ways can he make the selection?Approach Please puysss....

1) 56
2) 64
3) 72
4) 78
5) none of these
The numbers of real roots of the equation x2 + (x/x - 1)2 = 8

1) 3
2) 2
3) 1
4) 0