self Maths Puzzle

A person X has four notes of rupee 1, 2, 5 and 10 denomination. The number of differnt sums of money she can from them is

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number of combinations are:-
1
2
5
10
1+2+5+10
1+2
1+2+5
2+5
2+5+10
5
5+10
thus ans is 12
11 years agoHelpfull: Yes(0) No(1)

self Other Question

A question paper had ten questions. Each questions could only be answered as True(T) or False(F). Each candidate all the answered all the questions. yet, no two candidates wrote the answers in an identical sequence. How many different sequence of answers are possible? A leak a tank can empty the tank in 20 hr. The leak is at 3/4th of the hight from the leak to filling pipes there which can fill the tank in 6 hr and 12 hr. If both the pipes are opend in how many hr the tank will be filled