Q.
In how many different ways can five boys and five girls form a circle such that the boys and girls alternate?
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a
b
c
d
None
answer is A.
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Detailed Solution
After fixing up one boy on the table, the remaining can be arranged in ways but boys and girls are to alternate. There will be places, one place each between two boys these five places can be filled by girls in ways.
Hence, by the principle of multiplication, the required number of ways
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