Baby Deirdre wants to arrange 7 blocks in a row. To calculate the number of different arrangements she can make, we use the concept of permutations.
In this case, the number of ways to arrange 7 blocks is calculated by multiplying the numbers from 1 to 7 (since there are 7 blocks to arrange) together. This can be expressed as 7! (7 factorial).
1. Calculate 7! (7 factorial):
7! = 7 x 6 x 5 x 4 x 3 x 2 x 1
7! = 5040
Therefore, there are 5040 different ways Baby Deirdre can arrange the 7 blocks in a row. Each arrangement represents a unique permutation of the blocks.