Find the Missing Operator: Solve 110 ? 110 = 1

To solve this problem, we'll determine which operation makes the equation $110?110=1$ true:

• Step 1: Identify potential operations from the choices: addition $(+)$, subtraction $(-)$, division $(:)$, and multiplication (not explicitly mentioned).
• Step 2: Analyze whether any operation yields the result of 1.

Calculating:

• Addition: $110 + 110 = 220 \neq 1$
• Subtraction: $110 - 110 = 0 \neq 1$
• Division: $110 \div 110 = 1$, which matches the required result.

Therefore, substituting division $(:)$ into the equation satisfies the expression, resulting in:

$110 : 110 = 1$.

The appropriate sign is division, represented by the symbol $:$.

The solution to the problem is $\mathbf{\text{Choice 3: :}}$.