51, 53, 55, 57, 59, 61, 63, 65, 67, 69, 71, and 73
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51, 53, 55, 57, 59, 61, 63, 65, 67, 69, 71, 73, 75, 77, 79, 81, 83, 85, 87, 89, 91, 93, 95, 97, and 99.
There are 37 odd numbers from 1 to 73. Odd numbers are integers that are not divisible by 2, and they alternate with even numbers. In this case, the odd numbers from 1 to 73 are 1, 3, 5, ..., 71, 73. To count them, you can use the formula (last number - first number)/2 + 1 = (73-1)/2 + 1 = 36 + 1 = 37.
Between 52 and 73 there are 53, 54, ..., 72 a total of 72 - 53 + 1 = 20 numbers. Including 52 and 73 there are 22 numbers.
The square root of 73 is between 8 and 9.
The odd numbers between 1 and 100 are: 1 3 5 7 9 11 13 15 17 19 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