self Maths Puzzle

plz give me concept over cube related question

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self Other Question

1,4,36,1521,...... Suppose that, you are driving a bus with 10 passengers....
at 1st stop 8 people get in and 2 people come got out. then, at 2nd stop 8 people come down and 2 people got in. then, at 3rd stop again 8 people got in and 2 people got down.the bus comes to it last stop and this time all the people come down. the bus relaxes. now find the AGE of the driver.