How many 2-digit numbers can be written as the sum of exactly six different powers of 2, including ?
Select one option, then click Submit.
0
1
2
3
4
Select an option, then submit.
Sign in or create an account to reveal answers, view the solution, and save your progress. Create a free account to unlock practice and keep track of your work.
Pink Kangaroo 2015 (2015)
One puzzle per day. Cryptarithm, Magic Square, Summit. No sign-up required to play.
Play daily puzzle →Interactive problems and curated lessons—water pouring, magic squares, knight's tour, and more.
Browse library →See how you rank. Top solvers by problems solved correctly. Sign in to climb the ranks.
View leaderboard →Pink Kangaroo 2015 (2015)