Hello all, I sometimes do sums in my head to help me sleep and have found a calculation which gives the same answer whatever numbers I use. Please bear with me as I’m no expert.
take any number except one containing a 5 or 0. This is how it goes:
4 x 4 = 16 multiply these two digits
1 x 6 = 6
6 x 6 = 36 and again
3 x 6 = 18
1 x 8 = 8 *
8 x 8 = 64
6 x 4 = 24
2 x 4 = 8 *
The answer will always be 8 whatever number that is used. if a number contains 5 or 0, the answer will always be 0.
If the numbers are added, then the answer is 1.
My question is, is there a name for this rather weird result?
Please ask if I’m not clear enough.
Thanks
take any number except one containing a 5 or 0. This is how it goes:
4 x 4 = 16 multiply these two digits
1 x 6 = 6
6 x 6 = 36 and again
3 x 6 = 18
1 x 8 = 8 *
8 x 8 = 64
6 x 4 = 24
2 x 4 = 8 *
The answer will always be 8 whatever number that is used. if a number contains 5 or 0, the answer will always be 0.
If the numbers are added, then the answer is 1.
My question is, is there a name for this rather weird result?
Please ask if I’m not clear enough.
Thanks