Laverne starts counting out loud by ${}5$'s. She starts with $2$. As Laverne counts, Shirley sums the numbers Laverne says. When the sum finally exceeds $20,$ Shirley runs screaming from the room. What number does Laverne say that sends Shirley screaming and running?

Pythagorearn May 28, 2024

#1**+1 **

We can easily just graph out the numbers since there are not a lot of terms we have to go through.

Laverne | Shirley |

2 | 2 |

7 | 9 |

12 | 21 |

This means when Laverne says 12, Shirley goes off running!

Thanks! :)

NotThatSmart May 29, 2024