What is the largest palindro...
What is the largest palindromic number less than 1000000 and divisible by 5?Correct answers: 60
The first user who solved this task is Allen Wager.
#brainteasers #math #riddles
Dental chair patentIn 1848, the first U.S. patent for a surgical or dental operating-chair with adjustable elevation and tilt of the seat and back was issued to M.W. Hanchett of Syracuse, N.Y. (No. 5711). The chair included a footrest with adjustable elevation.[Image: top - full view of seat and foot rest; bottom - detail of tilt cogs beneath seat.] |