8 + 11 = 40
there is a pattern. 1+4=5, the answer from the previous equation 5+2+5=12, 12+3+6=21, 21+8+11=40.
8+11=40
I think it’s a because the lines kinda looks perfect but I might be wrong.
Answer:
a and d
Step-by-step explanation:
brainliest if you want :)
