credits to all
for the last time, 5.5 is 20.101010, and 6 is 21! I'll prove it! 5.5 is 2*2.5+0.5. If we are using base 2.5 we have 20+0.101010 which is 20.101010. And 6 is 2*2.5+1. In base 2.5, 2.5 is 10. And 2*10 is 20. And 20+1 is 21!
