MBA Exam

Find the remainder when 2^90 is divided by 91.(approach plzzz..)

1) 90
2) 1
3) 64
4) 27
5) 45

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MBA Other Question

From a pool set of 16 balls, some balls were selected.In case where order matters, balls were selected in 3360 ways.And in case , where order doesn't matter, balls were selected in 560 ways..How many balls were selected.??

1) 6
2) 8
3) 4
4) 3
A jar contained a mixture of two liquids A and B in the ratio 4:1. When 10 litre of mixture was taken out and 10 Litre of liquid B was poured into the jar , this ratio becomes 2:3. The quantity of liquid A contained in jar initially was

1) 4 L
2) 8 L
3) 16 L
4) 40 L