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Question

In an examination, the maximum marks for each of the three papers is 50 each. Maximum marks for the fourth paper is 100. Find the number of ways in which the candidate can score 605 marks in aggregate.

A
110551
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B
210012
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C
25000
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D
65100
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Solution

The correct option is A 110551
Let a be marks that he looses in section A
Marks obtained + marks lost =50
a+A=50
a=50A
Similar , b=50B
C=50C
d=100D
A+B+C+D=150
a+b+c+d=100
100 Identical marks 4 variables
100+41C41=103!100!×3!=101×102×1033×2=101×103×17=176851
substracting case (a=51.......100)
=3×52!49!×3!=66300
Final Answer : 110551

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