Question 23
How many positive integers $n$ satisfy
$$\frac{n+1000}{70}=\left\lfloor\sqrt n\right\rfloor?$$
Here $\lfloor x\rfloor$ is the greatest integer not exceeding $x$.
$$\frac{n+1000}{70}=\left\lfloor\sqrt n\right\rfloor?$$
Here $\lfloor x\rfloor$ is the greatest integer not exceeding $x$.