Answer: A and D
Explanation:
4x2 1/2= 10
For A, the equation is 2 1/2x4 and that is 10.
For B, it's 5/2 + 4, which is 6 1/2 and not 10.
For C, it's (2 1/2 + 2 1/2) + (2x4), which is 13, not 10.
For D, it's 5/2x4 and that is 10.
For E, it's (2x2 1/2) +(2x4), which is 13, not 10.
For F, it's 2 1/2 + 4, which is 6 1/2, not 10.