Welcome to the
1st Mathematics × Programming Competition!
1st Mathematics × Programming Competition!
Question Difficulty index: 4 / 10
Difficulty index: 4 / 10
Kenchung has 90 SBD and goes to a store to buy stationery. A pencil costs 9 SBD and a pen costs 10 SBD. How many different possible combinations are there for the stationery he purchased? (Buying nothing at all is not considered as a combination) (He does not have to use all the money)
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Answer submission
- Please submit through this link.
- You are not required to show your steps. You can use either a mathematical or programming approach.
- This competition will last for 24 hours. After that no more submission would be accepted.
Rules
- Participants who submit the answer as a comment below this post will be disqualified.
- Each participant can only submit once. In case of duplicated submission, the latest answer will be considered.
- You have to upvote this post AND the announcement post in order to be eligible for the competition.
Prizes
- The final SBD payout of the previous post would be added to the prize pool. The prize pool contains 0 SBD at this moment.
- The first participant who gave the correct answer will get 75% of the prize pool.
- Other participants who got the correct answers will enter a lucky draw. Those who resteemed this post will have 400% higher chance to win! The 5 winners will share 25% of the prize pool.
- If not all prizes are given out, they will be accumulated for the next competition!
reserve all the rights to disqualify any suspected cheating players and decide the distribution of prize among the winner(s).