Description : Can you figure out how this math trick works?
Last Answer : answer:Let i originally equal 1. n ∑ ab+a+b = 719 //719 for this problem, anyway. i = 1 Where a ≠ b, 1 ≤ a ≤ 5, 1 ≤ b ≤ 5, and b comes one term after a in the sequence ... Commutative Laws, eventually, you would get the same result no matter what two numbers you multiply and add up first in a list.