MBA Exam

A box contains coins of denomination 50 paise , rs 1, rs 2,rs 5. given that there are unlimited coins of each type find the number of ways of selecting the coin so that any such selection gives a total amount of rs 10.please help me out.

1) 49
2) 12
3) 48
4) 46

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MBA Other Question

1 >Number of ways to wear 5 Distinct Rings in 3 fingers such that every finger has atleast one Ring?2 > Number of ways to distribute 6 Distinct objects to 3 Identical Boxes such that each should have atleast one?3>In how many ways 4 Different rings can go into 1 finger?

1) 720,90,24
2) 720,180,24
3) 780,105,4^4
4) 720,90,4^4
Ten books are arranged in a row on a bookshelf. A student has to select three out of these ten books in such a way that no two books selected by him must have been lying adjacently. In how many ways can he make the selection?Approach Please puysss....

1) 56
2) 64
3) 72
4) 78
5) none of these