Sorry for the delay, guys. Something came up, and I was a little tied up for a while. Unfortunately, I’ll only be able to serve you the “sponsored dish” after this post — won’t take long. Meanwhile, I need your help on some mathematics. I was never good at questions like these, so any help from you guys will be greatly appreciated.
Please help me out, yea? I seriously need to know how to answer the question below. It’s some sort of a possibility (kebarangkalian — in Malay) question. If possible, can you include the formula and the answer as well? That’s because I have 2 similar questions. So if you provide the formula, I should be able to answer the next question myself (I hope).
The question goes something like this:
1. There are 3 people in 3 separate classrooms.
2. There are 10 different color pencils on the table (red, blue, green, …) of each classroom.
3. There are 50 numbers to choose (ie. 1, 2, 3, 4, 5, 6, … 48, 49, 50).
4. The 3 people need to write down 2 different numbers (between 1 to 50) on a paper.
5. What is the possibility of all 3 people using the same color pencil and writing the same numbers.
I feel like a fool for not knowing how to do such simple mathematics. I hope you guys can really help me out with this one. *Quite urgent* Thanks in advance!
My initial explanation might not be perfect. So I’m adding more detailed information.
Each person can only choose 1 type of color pencil. Both numbers must be written with the same color. Both numbers must be different.
All 3 people used blue color pencil to write the numbers 12 and 24.