in mathematics paper there are 10 question in how many ways can a student select or choose 7 question
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selection of those 7 questions consists :
- u know which formula will be applied nd remember it too
- sure enough to complete it
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according to the way that student knows how to solve that questions.... He needs to that questions in which he knows that he had studied it and find the answer of that
NeelamG:
i think it is permutation or combination based question
yes plz help
put n=10 , r= 7 in the combination formula
n! divides (r!(n-r)!)
120
is ans
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