Advanced MathEasyRepeated doubling by folding
Advanced Math practice question
A sheet of paper is folded in half, then in half again, and so on, four times in all. How many layers thick is the folded sheet?
Answer: 16
Each fold doubles the layers: 2, 4, 8, 16.
Common wrong answers
- If you answered 4
- 4 is the number of folds.
- If you answered 8
- 8 is after three folds.
- If you answered 12
- 12 adds 3 layers per fold instead of doubling.
More Advanced Math questions
- Easy
If f(x) = 3x − 7, what is the value of f(5)? - Easy
What are the solutions to x² − 9 = 0? - Easy
Which of the following expressions is equivalent to x² + 7x + 12 ? - Easy
The function g is defined by g(x) = x³ + 2x. What is the value of g(−2) ? - Easy
For x > 0, which of the following is equivalent to ∛(x⁵) ? - Easy
The function h is defined by h(x) = (x − 6)(x + 2). What is one value of x for which h(x) = 0 ?
Not affiliated with the College Board. SAT is a trademark of the College Board.