# maths MC

Eric,Betty,Tracy and Jack sit randomly at a square table. What is the probability that Eric sits opposite to Tracy?

A 1/3

B 1/6

C 1/8

D 1/12

l want clear step...

thx..

Rating

Probability for Eric to sits opposite to Tracy

= 4 X [1/4 X (1/3)]

= 1/3

It is because there are 4 choices for Eric to choose a seat.

Once Eric has chosen a seat, Tracy will have 1/3 chance to choose a seat opposite to Eric.

Source(s): Myself~~~

Probability for Eric to sits opposite to Tracy

= 4 X [1/4 X (1/3)]

= 1/3

It is because there are 4 choices for Eric to choose a seat.

Once Eric has chosen a seat, Tracy will have 1/3 chance to choose a seat opposite to Eric.

Assume that Eric sit in Seat 1, tracy must sit in Seat 3

*2 means they can change the seat and sit in seat2 and seat4

Source(s): me,me,me