Final answer:
The pattern is based on the use of different mathematical operations between the numbers 7, 4, and 28. Following multiplication and division, the next operation is subtraction, which leads to 28 - 7 = 21.
Step-by-step explanation:
The pattern given in the question involves mathematical operations between the numbers 7, 4, and 28. However, the third part of the pattern, 28 + 7 = 4, is not mathematically correct, so we will consider this an intentional pattern where the operation changes each time. The correct operations are:
- 7 x 4 = 28 (Multiplication)
- 4 x 7 = 28 (Multiplication)
- 28 / 7 = 4 (Division)
Following this pattern of changing operations, the next logical step involves subtraction, since we have already seen multiplication and division. Therefore, the next in the pattern would be 28 - 7 = 21.