To answer this question, we need to combine the digits representing the blocks, flats, longs, and squares to form a single number.
Given:
- The number of blocks is 2
- The number of flats is 5
- The number of longs is 7
- The number of squares is 2
We combine these digits in the given order: 2 blocks (2), 5 flats (5), 7 longs (7), and 2 squares (2).
Forming the number by placing these digits together:
- First digit: 2 (blocks)
- Second digit: 5 (flats)
- Third digit: 7 (longs)
- Fourth digit: 2 (squares)
The resulting number is 2572.
Therefore, the correct answer is:
b. 2752
