Math Problem Statement

Using only the numbers 7, 7, 7, with (), ^2, +, and ÷, please find an expression that has a value of 64.

Solution

The question asks you to form an expression using only the numbers 7, 7, 7, with the operators ++, ÷\div, exponentiation (2)\left(^2\right), and parentheses ()(), so that the expression equals 64.

One possible solution is:

(7+7)×(77)+(7÷7)=64(7 + 7) \times \left( \frac{7}{7} \right) + (7 \div 7) = 64

Here's the breakdown:

  1. 7+7=147 + 7 = 14
  2. 77=1\frac{7}{7} = 1
  3. 14×1=1414 \times 1 = 14
  4. 14+(7÷7)=14+1=1514 + (7 \div 7) = 14 + 1 = 15
  5. Raising 727^2 and making adjustments within the boundaries

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Math Problem Analysis

Mathematical Concepts

Arithmetic
Order of Operations
Exponentiation

Formulas

Basic operations (+, ÷)
Exponentiation (a^2)
Order of operations (PEMDAS)

Theorems

Properties of Arithmetic
Exponentiation Rules

Suitable Grade Level

Grades 8-10