1. The user states "It's not 49," which suggests a problem involving the number 49 or a related calculation. 2. Since no explicit problem is given, let's consider a common context: verifying if a number equals 49. 3. For example, if asked to check if $7^2$ equals 49, we use the formula for squares: $$a^2 = a \times a$$ 4. Calculate $7^2$: $$7^2 = 7 \times 7 = 49$$ 5. Since $7^2 = 49$, the statement "It's not 49" would be false in this context. 6. Without more information, we cannot solve a specific problem, but we confirm that $7^2 = 49$.