(a) There are 6 points in a plane. How many triangles can be formed with the points? (b) A family of 6 is to be seated in a row . In how many ways can this ...

Question 1 Report

(a) There are 6 points in a plane. How many triangles can be formed with the points?

(b) A family of 6 is to be seated in a row . In how many ways can this be done if the father and mother are not to be seated together?