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CBSE Class 11-science Answered


A student has to answer 10 questions, choosing at least 4 from each of part A and part B. If there are 6 questions in Part A and in part B, in how many ways can the student choose 10 questions?
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
Expert Answer

A student can chose 10 questions from the given 13 questions by

(i)      4 from part A and 6 from part B
(ii)    5 from part A and 5 from part B
(iii)    6 from part A and 4 from part B
So, total ways =
                   
Answered by | 04 Jun, 2014, 03:23: PM
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