Bill and Bob entered the expression "3 + 2 * 4" into their calculators. Bill got "20" for the answer, while Bob got "11".
The instructor concluded that Bob had a scientific calculator, but that Bill had a simpler model. How did the instructor know this? (Hint: What did Bob's calculator do differently from Bill's?)
I've punched this into my son's calculator and into the calculator that's on my cell phone, and they do give the two different answers. But the displays look a lot alike, and I'm pushing the same buttons in the same order. What am I missing?
the correct answer is 11.
the answer of 20 will only come from old calculators/or crappy calculators
then you put in 3+2 the calculator adds them right then and then when you hit *4 the calculator is actually computing