engineering recuitment NMDC Junior Officer (Trainee) Mock Test 2024 Quantitative Aptitude Speed Time and Distance
'n' number of persons stand on the circumference of a circle at distinct points. Each possible pair of persons, 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'?
1
Eight
2
Seven
3
Five
4
Six