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A big contains six white marbles and fiv...

A big contains six white marbles and five red marbles. Find the number of ways in which four marbles can be drawn from the bag. If (i) they can be of any colour. (ii) two must be white and two red. (iii) they must all be of the same colour.

Text Solution

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The correct Answer is:
(a) `""^(11)C_(4)` (b) `""^(6)C_(2)xx ""^(5)C_(2)` (c ) `""^(6)C_(4)+""^(5)C_(4)`.
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