What we plant in the soil of contemplation we shall reap in the harvest of action.— Meister Eckhart

Permutations and Combinations — quick quiz

5 real NSEA questions on Permutations and Combinations. Instant scoring and solutions, no signup — see where you stand in ~3 minutes.

Question 1 of 3

EASY

The number of ways in which 5 different books can be arranged on a shelf such that two particular books are always together is: