Which of the following sets are not well-defined?
set of all counting number
set of all even integers
set of integers greater than 6 but less than 10
set of four best actors in the world

I'll do the first one for you. it isn't very hard at all.on number one, you have (50 × 3), which equals 150, and (3 × 3), which equals 9. after you establish that, you add 150 and 9 together. so, (150 + 9) equals 159.this means that 53 × 3 = 159.

It took off from 11 degrees