Q1In how many ways can 4 people sit in a row of 4 chairs?

Q2From 6 colours, how many 3-colour combinations can be chosen?

Q3Who first gave explicit formulas for nPr and nCr?

Q48 people sit around a circular table. Arrangements = ?

Q5nCr + nC(r−1) equals:

Q6How many 4-digit numbers can be formed from digits 1–9 with no repetition?

Q7A committee of 3 men and 2 women is formed from 6 men and 5 women. Number of ways:

Q8Number of ways to arrange the letters of MISSISSIPPI: