Math Problem Statement

Resolver : Si se sabe que 73a4 es divisible entre 8 , y el numero a1 es divisible entre 9. Calcula a+4

Solution

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Math Problem Analysis

Mathematical Concepts

Divisibility Rules
Modular Arithmetic

Formulas

Divisibility rule for 8: Last three digits of a number must be divisible by 8
Divisibility rule for 9: Sum of the digits must be divisible by 9

Theorems

Divisibility Theorem

Suitable Grade Level

Grades 7-9