Brainteaser: Solve This Math Puzzle
Everyone loves a good brainteaser. It’s a fun way to give your brain a workout, and that’s likely why they’ve been so popular online lately. Now, try this math problem: 7 + 7 ÷ 7 + 7 x 7 – 7 =?
Can you figure out the answer? If not, an elementary – school student might be able to help.
3
2
1
.
Answer
First, follow the order of operations (PEMDAS: Parentheses, Exponents, Multiplication and Division from left – to – right, Addition and Subtraction from left – to – right).
We do the division and multiplication first. So, 7 ÷ 7 = 1 and 7 x 7 = 49.
The equation then becomes 7 + 1 + 49 – 7.
Next, we do the addition and subtraction from left – to – right. 7 + 1 = 8, 8+49 = 57, and 57 – 7 = 50.
So the answer is 50. Were you confused by this problem?
