MBA Exam

If A=(p,q,r,s,t) and B=(x,y,z),how many onto functions A->B exists??(please explain)

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

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MBA Other Question

if N=a0a1a2a3a4........a99 and M= a99a98a97.....a3a2a1 then what is with the divisibility ofmod of (N-M) (my cat was on 4th November and this was in paper...please solve it)

1) is divisible by 9 but not necessarily by 111
2) is divisible by 9 but not necessarily by 11
3) s divisible by 9 but not necessarily by 99
4) divisibility of such no.s can't be predicted
P is a point inside the triangle ABC. Line PA meets BC at D. Similarly, BP meets CA at E, and CP meets AB at F. If PD = PE = PF = 3 and PA + PB + PC = 43, then PA *PB*PC=??????

1) 154 :-)
2) 441 :-(
3) 308 :-&
4) 476
5) none of these........!!