Question

1+3+5+7+9+...+101+x=2237​

Answer 1

Răspuns:

-364

Explicație pas cu pas:

$1+3+5+7+9+...+101+x=2237\\51^2+x=2237\\2601+x=2237\\x=2237-2601\\ x=-364$

Formula: $1+3+5+7+...+n=(\frac{n+1}{2})^2$