math
posted by gary .
The "wapple" of a number is defined as the number of positive odd intergers less than that number.
1. what is the wapple of 19?
2.If the wapple of x is equal to 5, what is the wapple of x + 6?

using w(x) for wapple of x,
w(19) = 9 since the odds less than 19 are 1,3,5,7,9,11,13,15,17
between x and x+6 are 3 odd numbers, so
w(x+6) = w(x)+3 = 8