How many integers are between 100 and 10000 in the records of which there are exactly three identical digits?

333

Step-by-step explanation:

Three digit posibilitys: 9

4 digit and 5 digit posibilitys: 322

d. millimeters per hour.

step-by-step explanation:

we are given that,

carlo used a rain gauge to measure the amount of water his lawn is receiving from the sprinklers.

since, according to the options, we see that,

water cannot be measured by 'miles per hour', 'meters per second' and 'grams per seconds'.

we get that, the water can be measured by 'millimeters per hour'.

hence, the appropriate rate for describing the amount of water is 'millimeters per hour'.