Oh, dude, let me grab my calculator real quick... Okay, so you add all those numbers up and then divide by how many numbers there are. So, like, 11 + 13 + 17 + 19 + 23 = 83, and then you divide by 5 because there are 5 numbers. So, the average is 16.6. Easy peasy lemon squeezy!
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The average is 19.
gcftd6
Well, honey, the odd numbers between 10 and 20 are 11, 13, 15, 17, and 19. It's not rocket science, just simple math. So, there you have it, darling. Hope that clears things up for you.
How many subsets are there in 2 3 5 7 11 13 17 19 23?
They are: 11 13 17 19 23 and 29 which makes six of them