Respuesta :

cat3612

Answer:

40

Step-by-step explanation:

21, 23, 25, 27, 29, 31, 33, 35, 37, 39, 41, 43, 45, 47, 49, 51, 53, 55, 57, 59, 61, 63, 65, 67, 69, 71, 73, 75, 77, 79, 81, 83, 85, 87, 89, 91, 93, 95, 97, 99

facundo3141592

We will see that there are 35 two-digit odd numbers larger than 20.

How many odd 2-digit positive integers greater than 20 are there?

So in each range of 10 consecutive numbers, we have 5 odd ones.

For example, between 20 and 30 we have:

{21, 23, 25, 27, 29}

And from 20 to 100 (we count to 100 because we only care for 2-digit integers) there are 7 sets of 10s

(20 to 30), (30 to 40), (40 to 50), (50 to 60), (60 to 70), (70 to 80), (80 to 90), (90 to 100).

And we know that in each one of these 7 sets we have 5 odd numbers, so we can conclude that there are:

7*5 = 35 2-digit odd numbers larger than 20.

If you want to learn more about odd numbers, you can read:

https://brainly.com/question/543861