Here is another one :

So the teacher assigns to Ada, Bob, Charles and Danna to go home and figure out what is 2 + 2.Ada, the daughter of a mathematician, asks her dad. He responds: "Well, 1 + 1 = 2. 2+ 1 = 3. 3 + 1= 4, but it can be rewritten as 2 + 2, so 2 + 2 = 4"

Bob asks his mom, who is an engineer. She takes out her HP calculator, punches in RPN the appropiate keys, and announces: "It is 4.000000000000"

Charles asks his dad, the phycisist, and he responds: "Well, it is about pi on a zeroth order calculation"

Finally, Danna ask his dad, who is an accountant: "Dad, how much is 2 + 2?" And he responds: "How much do you want it to be?"

fuk I did nt understand this joke apart frm the last part