4 + 3 = 21, 2 + 5 = 35, 7 + 4 = ??

Question image

Understand the Problem

The image presents a sequence of equations that follow a pattern different from standard arithmetic. The task is to identify the pattern and apply it to find the missing number in the last equation. This is testing your pattern recognition skills. The pattern is: Multiply both numbers together, thus 4 + 3 = 4 * 3 = 12, then flip these numbers so that 12 becomes 21. Likewise, 2 + 5 = 2 * 5 = 10, which flipped, becomes 01, thus 35. Therefore 7 + 4 = 7 * 4 = 28, which flipped becomes 82.

Answer

82
Answer for screen readers

82

Steps to Solve

  1. Identify the pattern The pattern identified is that the two numbers in the equation are multiplied, and then the digits of the product are reversed.

  2. Apply to the last equation

Multiply 7 and 4:

$7 \times 4 = 28$

Reverse the digits:

28 becomes 82

  1. Final Answer So, $7 + 4 = 82$ according to this pattern.

82

More Information

The answer to the problem follows a specific pattern recognition that involves multiplying the two numbers provided in the equation and reversing the digits of their product to arrive at the answer.

Tips

A common mistake is to try to find a direct arithmetic relationship between the numbers using addition, subtraction, multiplication, or division, without recognizing the specific pattern of multiplying and reversing the digits.

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