The smallest odd between 20 and 158 is 21

The greatest odd between 20 and 158 is 157

So the number of odd between 20 and 158 is:

\(\dfrac{157-21}{2}+1=69\left(odd-numbers\right)\)

So there are 69 odd number between 20 and 158

The smallest odd greater than 20 is: 21
The largest number less than 158 is 157
Odd numbers are:

(157-21): 2 + 1 = 69 (odds)

Answer: 69 odds

Smaller numbers greater than 20 are: 21
The largest number less than 158 is 157
Odd numbers are:

(157-21):2+1=69

Answer:69