The prime numbers are added in order starting with $2$: $2$, $2 + 3$, $2 + 3 + 5$, and so on. How many of the first 12 such sums are also prime?
Question:
The prime numbers are added in order starting with $2$: $2$, $2 + 3$, $2 + 3 + 5$, and so on. How many of the first 12 such sums are also prime?
Answer:
Let's think step by step.

user
5
The prime numbers are added in order starting with $2$: $2$, $2 + 3$, $2 + 3 + 5$, and so on. How many of the first 12 such sums are also prime?
train