2. Let's talk about 2 -digit numbers that are less than 30 . a) How many numbers are there?

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To find the two-digit numbers that are less than 30, we first identify the range of two-digit numbers. The smallest two-digit number is 10, and the largest two-digit number less than 30 is 29.

Now, we can list the two-digit numbers less than 30:
- 10
- 11
- 12
- 13
- 14
- 15
- 16
- 17
- 18
- 19
- 20
- 21
- 22
- 23
- 24
- 25
- 26
- 27
- 28
- 29

Next, we count these numbers.

The two-digit numbers less than 30 are from 10 to 29, inclusive.

To find the total count, we can use the formula for counting integers in a range:
$$
\text{Count} = \text{Last number} - \text{First number} + 1
$$
Substituting the values:
$$
\text{Count} = 29 - 10 + 1 = 20
$$

Thus, there are **20 two-digit numbers that are less than 30**.
There are 20 two-digit numbers less than 30.

2. Let's talk about 2 -digit numbers that are less than 30 . a) How many numbers are there?

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