The numbers between 20 and 40 are 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, and 39. These numbers form a consecutive sequence with a common difference of 1. Mathematically, this can be represented as {x | 20 < x < 40}.
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40
There are infinitely many numbers between 20 and 40. For example: 21.0000000000135120000001 21.0000000000135120000002 21.000000000013512000000301 21.000000000013512000000302 21.000000000013512000000303 and so on.
The velocity = (location at 40 seconds - location at 20 seconds)/20 in the direction in which the object is moving.
65 85-45=40 40/2=20 45+20=65 85-20=65
There are four prime numbers between 20 and 40