50
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There are 40 odd numbers between 20 and 100. Remember that an odd number is every second number. There are 80 numbers between 20 and 100, so there are 40 odd numbers and 40 even numbers.
The first 100 odd whole numbers are: 13579111315171921232527293133353739414345474951535557596163656769717375777981838587899193959799101103105107109111113115117119121123125127129131133135137139141143145147149151153155157159161163165167169171173175177179181183185187189191193195197199.
This has no answer. Any five odd numbers will always add to an odd number. 100 is even.
201
There are 100 odd numbers between 1 and 199. This can be calculated by dividing the total range (199 - 1 = 198) by 2, as odd numbers are spaced every two integers. Therefore, 198 divided by 2 equals 99, representing half of the odd numbers in the range. Multiplying this by 2 gives us the total count of odd numbers, which is 100.