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A student has to answer 6 out of 10 questions which are divided into two parts containing 5 questions each and he is permitted to attempt not more than 4 from any group. In how many ways can he make up his choice? |
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Answer» The different possibilities are mentioned below;
The required number of ways = 5C1 × 5C2 + 5C3 × 5C3 + 5C2 × 5C1 = 5 × 10 + 10 × 10 + 10 × 5 = 200. |
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