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1.In how many ways can the first and second prizes in mathematics and the first and second prizes in physics be awarded in a class of 25 pupils?

Asked by 30th March 2013, 6:51 PM
Answered by Expert
In a class of 25 students, the first and second award can't be given to the same person, but a student who has received an award in maths can again receive the award for physics. 
So, its like choosing 2 people from the class of 25 students twice and then once these students are picked, they can again be given either first or second prize. 
Answered by Expert 30th March 2013, 8:22 PM
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