Vlad did not make a mistake.
I'm leaning towards combination because the order you do the chores does not matter. In permutation the order matters.
Answer:
top right one
Step-by-step explanation:
Answer:
37
Step-by-step explanation:
we would had to call the number needed a random value or call it x but
let's do the calculation backward to ease things up
(566 - 11) ÷15 ➡ 555 ÷ 15 = 37
50 kg is the biggest among them