Question

Find the number such that for each day of week make an up count from me, if you make no mistake you will get twenty three.

Answer 1

Let I be denoted by x . There are 7 days in a week.
By given condition up counting from x for 7, we get the sum = 23
i.e. x+7=23
Now, x=23−7=16
⇒x=16
or by inspection, we have 16+7=23.
Thus, I am 16.