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Conditional Probability

Number of way...

Question

Number of ways in which 4 boys and 2 girls (all are of different heights) can be arranged in a line so that boys as well as girls among themselves are in decreasing order of height (from left to right), is

A

1

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B

6!

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C

15

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D

None of these

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Solution

The correct option is A 1
$T h e r e i s o n l y o n e w a y f o r t h i s t o b e p o s i b l e .$

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