Answer:
*step by step*
Step-by-step explanation:
If he erases one of the digits in a 4-digit number, then only 3 remain, not four.
If he erased the first digit, then it must have been 1-9, so the total is in the range 11 - 19
otherwise the digit could have been 0-9 in which case the total is in the range 10-19
The first two days he will both swim and bike are days 24 and 56.
Swim: Days 6,12,18,24,30,36,42,50,56
Bicycle: Days 8,16,24,32,40,48,56,
359
brainiest?
c
