MBA Exam

A vertical tower XY subtends the same angle of 30 degrees at each of two places P and Q, 60 m apart on the ground. If PQ subtends an angle of 120 degrees at X, the length of the tower isIts a marathon question: Someone please explain the approach...

1) 10
2) 20
3) 30
4) 40

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MBA Other Question
x and y are natural numbers such that they satisfy the equation x + y + 31 = 2xy. Find the maximum possible integral power of 6 in (xy)!.[n! is the product of the first ‘n’ natural numbers.] let me know the procedure also...

1) 11
2) 15
3) 14
4) 16
 S=1!+2!+3!+...+n!can somebody tell me the sum of this series i mean in the form of n.

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