How many three digit numbers have a 2 as a tens digit??

90 numbers

Step-by-step explanation:

Considering the stipulations from the question, the layout for the 3-digit number is:

The hundreds digit, , can be any number from 1-9 inclusive, which contains 9 numbers.

The tens digit, 2, is fixed, as stipulated from the problem, and therefore may only be one number, 2.

The ones digit, , can be any number from 0-9 inclusive which gives 10 options.

Therefore, there are three digit numbers that have 2 as a tens digit.

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