AMC / AIME · Divisibility · Easy

Divisibility: Find the missing digit math so math is divisible by math.

Factors and gcd/lcm.

Try the problem

Find the missing digit xx so 52x52x is divisible by 99.

Hint and answer

Concept to use

Basic rules.

Hint

Apply the relevant digit test or factor condition.

Answer

2

More Divisibility problems

Practice more with the free Divisibility worksheet generator, or browse the full problem library.