MBA Exam

Out 20 consecutive natural no ,in how many ways 4 no be selected such that any two of selected no differ by atleast 3? Please share the approach....

1) 20C3/3
2) 17C4
3) 23C4
4) 14C4

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MBA Other Question

Find the number of zeros in 5*10*25*40*50*55*65*125*80

1) 8
2) 9
3) 12
4) 13
5) 10
Cheap and Best, a kirana shop bought some apples at 4 per rupee and an equal number at 5 per rupee. He then sold the entire quantity at 9 for 2 rupees. What is his percentage profit or loss?

1) 1.23% loss
2) 6.66%
3) 8.88%
4) No profit no loss
5) None of these