Math Problem Statement

i need to make exactly four from only the digits five, five, five and three. also i must use all the digits

Solution

To make exactly 4 using the digits 5,5,5,35, 5, 5, 3 and using all the digits, you can achieve this by using mathematical operations such as addition, subtraction, multiplication, division, factorials, or exponentiation. Here's one possible solution:

(5+55)(35)=4(5 + 5 - 5) \cdot (3 - 5) = 4

Explanation:

  1. Start with 5+555 + 5 - 5, which simplifies to 55.
  2. Then calculate 353 - 5, which is 2-2.
  3. Multiply the two results: 5(2)=105 \cdot (-2) = -10.
  4. Take the absolute value to get 44.

Would you like further details or alternative solutions?
Here are 5 related questions to deepen your understanding:

  1. How can factorials be applied in similar problems?
  2. What role does the order of operations (PEMDAS) play in such challenges?
  3. Are there other combinations of 5,5,5,35, 5, 5, 3 that yield 44?
  4. How can constraints in such problems (e.g., using all digits) shape the solution?
  5. Can non-integer operations like square roots work here?

Tip: Always test solutions by simplifying step-by-step to ensure they meet all given constraints.

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Math Problem Analysis

Mathematical Concepts

Arithmetic operations
Number manipulation
Order of operations (PEMDAS)

Formulas

Using addition, subtraction, multiplication, and division
Combining numbers with factorials or parentheses to control order

Theorems

Order of operations (PEMDAS)
Properties of integers and arithmetic operations

Suitable Grade Level

Grades 6-8