answersLogoWhite

0


Best Answer

They all have square roots.

Square root of 1 is 1

Square root of 4 is 2

Square root of 9 is 3

User Avatar

Wiki User

10y ago
This answer is:
User Avatar
More answers
User Avatar

Wiki User

11y ago

They are all square numbers under twenty.

This answer is:
User Avatar

Add your answer:

Earn +20 pts
Q: What do 1 4 and 9 have in common?
Write your answer...
Submit
Still have questions?
magnify glass
imp