Permutations, combinations and probability

Question 1 of 10

Two fair coins are tossed. What is the probability of at least one head?

Question 2 of 10

How many ways can 6 people be seated around a round table?

Question 3 of 10

How many ways can the letters of the word GHANA be arranged?

Question 4 of 10

How many arrangements of the letters of the word BOOK are there?

Question 5 of 10

Evaluate ⁶P₂.

Question 6 of 10

If P(A) = 0.3, find P(not A).

Question 7 of 10

How many 4-digit even numbers can be formed from 1, 2, 3, 4, 5 without repetition?

Question 8 of 10

In how many ways can the letters of the word GHANA be arranged?

Question 9 of 10

How many ways can 3 people be chosen from 7?

Question 10 of 10

Evaluate ⁵P₂.