In "Teach Yourself Ruby in 21 Days"
by Mark Slagell, SAMS 2002
there is an error on page 121.

As printed:

x = 25.0/3
put x             # output: 1.666666667

Should be (for same output value)

x =  5.0/3        
put x             # output: 1.666666667

Jabari Zakiya