
Challenge: Can you solve this math problem for middle schoolers – without a calculator?
Classic brain training methods are perhaps puzzles like crosswords or sudoku, but I have recently become more attracted to the type of challenge you’ll see below.
These puzzles have been flooding the web lately, probably because they are really fun!
These are old classic mathematical problems. When you were in middle or high school.
These math problems are more fun when you find yourself trying to remember the math you learned as a child.
Can you figure out the correct solution?
Here is the challenge, in the picture below.

At the top of the picture, we see the task and then four possible answers.
Which solution do you think is the correct one?
How did you come up with it?
Take your time and think about it to find the correct solution.
Done? Below you can check if you picked the right number!
A
B
C

The correct answer
The correct answer is B: 12.
Why is 12 the correct answer?
Well, if you remember from your school days, according to the order of operations, you do multiplication before addition and subtraction, so you start by solving 3 x 3, which results in 9.
Then we are left with a simpler math problem: 3 + 9 – 3 + 3
The answer is therefore 12.
Did you pick the correct number? Congratulations!
This Is What Drinking Carrot Juice Every Day Can Do for You

Carrot juice isn’t just bright and tasty—it’s a glass full of health benefits. Whether you’re sipping it fresh in the morning or using it as a midday pick-me-up, this simple drink can make a powerful difference in how you feel, inside and out.
1. Boosts Eye Health
Carrots are famous for their high beta-carotene content, which your body turns into vitamin A—essential for sharp vision, especially at night. Drinking carrot juice regularly helps protect your eyes from age-related decline and dryness.
2. Improves Skin Glow
Carrot juice is packed with antioxidants and vitamin C, which help the skin stay clear, hydrated, and radiant. It may reduce blemishes, support collagen production, and give your skin a natural, healthy glow.
3. Supports Heart Health
With potassium, fiber, and powerful plant compounds, carrot juice can help regulate blood pressure and support a strong heart. It’s a gentle way to care for your cardiovascular system every day.
4. Strengthens Immunity
Thanks to its mix of vitamins A, C, and K, carrot juice helps the immune system function better. It supports your body’s natural defenses and can even speed up recovery during seasonal changes.
5. Aids Digestion
Carrot juice soothes the stomach and supports healthy digestion. It may help with bloating, constipation, and gentle cleansing of the gut.
How to Enjoy It
Drink one small glass (about 150–200 ml) of fresh carrot juice daily, preferably on an empty stomach in the morning. You can enjoy it alone or mix it with a bit of apple or ginger for extra flavor and benefits.
A Simple Habit with Big Results
Making carrot juice part of your daily routine is an easy and natural way to support your overall health. Just one glass a day can help you feel more energized, clearer, and glowing—from the inside out.
Leave a Reply