Answer :

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.