Can You Guess the Guest?

Bibi is celebrating her

$21$

st birthday party. She invites you and another

$5$

$$friends to join

the party. Lucky to you and her friends, you will get a private room to enjoy the party

with Bibi.

Bibi decided to play with her

$5$

$$friends

$($

except you

$)$

$$because Bibi wants your help. Her

friends

$($

those five friends

$)$

$$will think of a random number

$($

Mi

$)$

$.$

$$Then$,$ Bibi will give

them some pieces of blank paper.