MBA Exam

If the roots of the equation x^10-1=0 are 1,a,b,c.......Then what is the value of (1-a)(1-b)(1-c)....??

1) 10
2) 20
3) 0
4) 1

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MBA Other Question

person A and B come to a station haseenapur for a metro between 7:00 Am to 7:20 am.they are willing to wait for one another for 5 min. after which they would take train together or alone.what's the probability that they will meet at station??

1) 7/14
2) 7/16
3) 7/18
4) insufficient data
Consider a circle with circumference 200 sq metres and two people A and B moving in clockwise direction with speeds 5m/s and 9m/s a) when do they meet at the starting point for the first time ?b) after how much time will they meet for the first time ?c) at how many distinct points they meet ?d) if they move in opposite direction then in how many distinct points do they meet ? plz explain the solution in detail

1) 200,50,4,14
2) 250,45,5,15
3) 300,60,10,15
4) 200,50,5,14