49. The sum of several numbers is 10. Can the sum of their squares be less than 0.2?
49. It is possible. For example, if we take 0.01 as an addend 1000 times, we get 10, the sum of the squares of these numbers is 0.1, i.e.

$$
\underbrace{0.01^{2}+0.01^{2}+\ldots+0.01^{2}}_{1000 \text { times }}=0.0001 \cdot 1000=0.1<0.2
$$