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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?

 Jan 11, 2024
 #1
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For YOUR problem    :     2   then  7    then 12    = 21      so the number must be 12 ....but I have no idea what Shirley's problem is !

 Jan 11, 2024

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