MBA Exam

Three men A,B and C round an oval garden from a fixed post at the rates of 5, 11/2,16/3 km per hour. they come back to the fixed post in 15/4 hours. Find the greatest length the race course can have.

1) 7/8 km
2) 4/8 km
3) 5/8 km
4) 1 km

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MBA Other Question
if 4 whole no's are taken at random & multiplied together, what is the probability that the last digit in the product is 1,3,7 or 9plz explain

1) 15/653
2) 12/542
3) 16/625
4) 13/625
 In the X-Y plane, the area of the region bounded by the graph of |x + y| + |x − y| = 4 is

1) 8
2) 12
3) 16
4) 20