MediumPython ProgrammingMiddle Stage (6–8)High School (9–10)High School (11–12)UndergraduateGeneralPython Basics › LoopsNumericalPython-Coded

Start with 1 and keep doubling the number until it is more than 100.

Contributed by StemPy Lab

Try it on paper first. A hint, the key idea and the worked solution are here when you need them.

Start with $1$ and keep doubling the number until it is more than $100$ . What is the final number, and how many doublings did it take?

Need a reminder? The key ideaShow

Repeat while the value is not yet more than 100.

The worked solution

Have you tried it?

Work it out on paper first. It is fine to get stuck or make a mistake: that is how we learn. When you are ready, compare your working with the solution.

Plan. We do not know the number of rounds, so we use a while loop. Repeat while value <= 100, double it and count.

Doubling	Value
start	1
1	2
2	4
3	8
4	16
5	32
6	64
7	128

Answer: the final value is $128$ , after $7$ doublings. (Check: $2^7 = 128$ .)

← All Problems

← Show the numbers from 1 to 5 with a while loop.Asha saves 150 rupees every month. How many months does she need to save at least 1000 rupees? →

More onPython Basics › Loops

Discussion (0)

Loading…