Viral math riddles regularly storm social media feeds, sparking thousands of heated debates in comment sections. One of the most popular math puzzles circulating online presents a simple-looking equation over a background image and challenges users: “Please don’t use a calculator. Use your brain: 50 + 50 – 25 × 0 + 2 + 2 = ?”
While many people quickly arrive at incorrect answers like 4, 0, or 104, applying the standard mathematical order of operations reveals the single correct solution.
Step-by-Step Mathematical Solution
To solve $50 + 50 – 25 \times 0 + 2 + 2$, you must follow the standard order of operations (PEMDAS / BODMAS):
- Parentheses / Brackets: None.
- Exponents / Orders: None.
- Multiplication and Division: Perform multiplication first from left to right.$$25 \times 0 = 0$$Now substitute $0$ back into the equation:$$50 + 50 – 0 + 2 + 2$$
- Addition and Subtraction: Perform addition and subtraction sequentially from left to right:
- $50 + 50 = 100$
- $100 – 0 = 100$
- $100 + 2 = 102$
- $102 + 2 = \mathbf{104}$
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| ORDER OF OPERATIONS BREAKDOWN |
| |
| Original Equation: 50 + 50 - [25 × 0] + 2 + 2 |
| | |
| v |
| Multiplication Step: 50 + 50 - 0 + 2 + 2 |
| | |
| v |
| Left-to-Right Add/Sub: 100 - 0 + 2 + 2 ---> RESULT = 104 |
+-----------------------------------------------------------------------+
Common Mistakes People Make
| Common Incorrect Answer | Why People Get It Wrong | Correct Operation |
| 4 | Multiplying the entire left side sum $(50+50-25=75)$ by $0$, turning everything into $0$, then adding $2+2$. | Only $25 \times 0$ equals $0$, not the whole preceding sequence. |
| 0 | Assuming multiplying by $0$ at any point zeroes out the final answer. | Multiplication applies strictly to its adjacent numbers, not remaining terms. |
| 104 | Correct Answer! Applying multiplication first ($25 \times 0 = 0$), then calculating $50 + 50 – 0 + 2 + 2$. | Follows order of operations (PEMDAS/BODMAS) properly. |
Frequently Asked Questions (FAQ)
1. What is PEMDAS / BODMAS?
PEMDAS (Parentheses, Exponents, Multiplication & Division, Addition & Subtraction) and BODMAS (Brackets, Orders, Division & Multiplication, Addition & Subtraction) are acronyms used to remember the universal order of operations in arithmetic.
2. Why do basic math puzzles go viral on social media?
Because people calculate from left to right without applying order-of-operations rules, producing wildly different answers that fuel high engagement and commentary.
Conclusion
By following standard mathematical rules, $50 + 50 – 25 \times 0 + 2 + 2$ equals 104.
