# Thread: Figure out the decimal amount

1. ## Figure out the decimal amount

Say you have a bunch of numbers which have decimal amounts attached, like 43.75, but you don't know what the decimal amount is, so the number is displayed as 43.

Try to figure out what the difference is between the following numbers, and what the decimal value of the first number is. The difference between each number is the same for all of the numbers.

43, 45, 47, 48, 50, 52, 53, 55, 57, 59, 60, 62, 64, 65, 67, 69, 70, 72, 74, 76, 77, 79, 81, 82, 84, 86, 87, 89, 91, 93, 94, 96, 98, 99, 101, 103, 104, 106, 108, 110, 111, 113, 115, 116, 118, 120, 121, 123, 125, 127, 128, 130, 132, 133, 135, 137, 138, 140, 142, 144, 145, 147, 149, 150, 152, 154, 155, 157, 159, 161, 162, 164, 166, 167, 169, 171, 172, 174, 176, 178, 179, 181, 183, 184, 186, 188, 189, 191, 193, 195, 196, 198, 200, 201, 203, 205, 206, 208, 210, 212

2. Difference = 1.75

43.5 45.25 47 48.75 50.5 52.25 .....

3. Almost. The numbers don't round, the decimal just isn't displayed.

4. Found 13 possibilities:

1st number: 43.61 or 43.62 or 43,63 : difference = 1.71
1st number: 43.70 to 43.79 : difference = 1.70

5. ding ding ding...

I should've posted a larger sample

43, 45, 47, 48, 50, 52, 53, 55, 57, 59, 60, 62, 64, 65, 67, 69, 70, 72, 74, 76, 77, 79, 81, 82, 84, 86, 87, 89, 91, 93, 94, 96, 98, 99, 101, 103, 104, 106, 108, 110, 111, 113, 115, 116, 118, 120, 121, 123, 125, 127, 128, 130, 132, 133, 135, 137, 138, 140, 142, 144, 145, 147, 149, 150, 152, 154, 155, 157, 159, 161, 162, 164, 166, 167, 169, 171, 172, 174, 176, 178, 179, 181, 183, 184, 186, 188, 189, 191, 193, 195, 196, 198, 200, 201, 203, 205, 206, 208, 210, 212

Which means 43.7 with a difference of 1.7 is correct.

6. Originally Posted by Jerick
Which means 43.7 with a difference of 1.7 is correct.
Allelluya!!