Okay, so today I decided to mess around with this “49 number” thing. I’d seen it pop up a few times online, and I was curious to see what all the fuss was about.
First, I googled it. Honestly, I just needed to know what it even was. Turns out, it’s this little math trick. Seems simple enough, right?
My First Try
I grabbed a pen and a piece of scrap paper. I picked a random two-digit number – let’s say 62. Then, I reversed the digits to get 26. Next, I subtracted the smaller number from the larger one: 62 – 26 = 36. And finally I add 36+63, get 99, so I was wrong about 49.
- Started with 62.
- Reversed to get 26.
- Subtracted: 62 – 26 = 36.
- Add:36 + 63 = 99
Trying Again (and Again…)
Okay, so clearly, my first attempt failed. I tried a few more numbers, just to be sure. Let’s see, I did:
- 81 (reversed is 18, and 81-18 is 63, then 63+36=99, Nope.)
- 53 (reversed is 35, and 53-35 is 18, then 18+81=99,Still Nope.)
I kept getting 99, not 49. Hum…I must misunderstand some rules.
Figured it out!
I am so silly! I just find that the result from subtraction needs to be processed again!So, I will tried one more time.
- 53 (reversed is 35, and 53-35 is 18, then 18 reversed is 81, and 81-18 is 63,63 reversed is 36,63-36=27,27 reversed is 72,72-27=45,45 reversed is 54,54-45=9.)
- Oh, I did something wrong again! I should always use bigger number to minus smaller number.
Final Try
OK. I will keep the bigger number minus smaller number, then I will do it again.
- 75 (reversed is 57, and 75-57 is 18, then 18 reversed is 81, and 81-18 is 63,63 reversed is 36,63-36=27,27 reversed is 72,72-27=45,45 reversed is 54,54-45=9.)
- I notice that the final number always be * matter how I tried, It always goes to 9.I think I did too much reverse that cause this happened.
I must miss some points. Let me find the answer * then I will be back.
