Give a decimal number that is less than 23.7 and greater than 23.7

I think you are asking for two numbers, so you just have to look at the decimals.

23.7

We can use an infinite amount of numbers here, but to make it simple you can just take away 0.01 or add 0.01.

23.69

23.71

These are funny answers as well because they both round to 23.7 and meet the requirements.

23.69 and 23.71 are some of the eligible answers