One More Time ???@Nritya Performance #Shorts Dance Video #Govind Mittal and Friends

A man has three friends.The number of ways he can invite one friend everyday for dinner on six successive nights so that no friend is invited more than three xx is a.640 b.320 c.420 d.510

[A] : Tail wagging dance is performed for short distances . It conveys both the distance and speed of the scout bees . [R] : Foraging bees keep touching the scout bees through dance to get the information mainly by olfactory stimulation .

The probability of inviting three of your friends on 5 consecutive days, exactly one friend a day and no friend is invited on more than two days is