Question

1)What is the sum of all prime numbers less than 30

Answer 1

$$\begin{gathered} \mathrm{The}\mathrm{prime}\mathrm{numbers}\mathrm{less}\mathrm{than}30\mathrm{are}: \\ 2,3,5,7,11,13,17,19,23,29 \\ \mathrm{Sum}=2+3+5+7+11+13+17+19+23+29=129 \end{gathered}$$