A whole number is a perfect square if it can be expressed as the product of two equal whole numbers. What is the sum of the first $10$ perfect squares? 
Overseas Competition->Knowledge Point->Number Theory Modules->Perfect Square Numbers->Basic Applications of Square Numbers
We can list out the perfect squares:  $1\times 1 = 1$  $2\times 2 = 4$  $3\times 3 = 9$  $4\times 4 = 16$  $5\times 5 = 25$  $6\times 6 = 36$  $7\times 7 = 49$  $8\times 8 = 64$  $9\times 9 = 81$  $10\times 10 = 100$  Hence the sum of the first $10$ perfect squares is $385$. 