MBA Exam

IF A=(P,Q,R,S,T) and B=(1,2,3)..then how many onto functions F:A->B exists?*(Provide the solution please if u get it)

1) 125
2) 243
3) 150
4) 144

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MBA Other Question
EASY ONE puysss :The work done by 4 men in 12 days is equal to the work done by 6 women in 10 days and is also equal to the work done by 8 children in 9 days. A man, a woman and a child working together take 10 days to complete a particular job. In how many days will the same job be completed by 2 women and 5 children working together?

1) 5
2) 6
3) 4
4) 7
5) 4.5
 A = 0.1 + 0.11 + 0.111 + 0.1111 + …… upto n terms, then

1) 1
2) 2
3) 3
4) 4
5) 5