In Ant-Man and the Wasp (2018), Hank and his daughter Hope learn that Janet has been using Scott as her antenna:
Hank: I'm tracking your signal using subatomic frequencies... between point two and point nine.
Scott (as Janet): I'd narrow it to four and six.
Hank: That's too tight. We could miss you.
Scott (as Janet): Look at us squabbling again.
Hank: Fine. All right, between three and seven.
What is the significance of "sums to 10" in this scene?