Mathematics · Permutations and Combinations
'n' number of persons stand on the circumference of a circle at distinct points. Each possible pair of persons, who are not standing next to each other, sings a two-minute song, one pair after the other. If the total time taken for singing is 40 minutes, then what is the value of 'n'?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Six
- 2Five
- 3Seven
- 4Eight✓
Correct answer
Eight
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