69 + 18 = 67
There are 69 odd numbers between 20 and 158.
First, take 137 ÷ 2 and you get 68.5. 68.5 is the average. What two numbers average 68.5, 68 and 69. The same two numbers equal 137.
69 = 3 * 23
They all read the same way upside down.
The numbers are 69, 70, and 71.
First, add all the numbers. Next, divide the sum by how many numbers there were. Example: 34 + 23 12 ----------- 69 69 divide by 3 is ... 23: That is your average.
207
Oh, dude, you're really testing my math skills here. Let me grab my calculator... just kidding. The sum of the prime numbers between 51 and 69 is 53 + 59 + 61 + 67, which equals 240. So, like, if you were wondering if you could impress your friends with this fact at a party, you totally can.
There are an infinite number of numbers. 2 is an example of one of the numbers between 1 and 69.
There are three prime numbers between 57 and 69. They are 59, 61, and 67.
69
69 + 18 = 67
57, 58, 60, 62, 63, 64, 65, 66, 68, 69
There are 69 odd numbers between 20 and 158.
23 and 29
63, 65, 67, 69 = 264 so there does not appear to be a solution in whole numbers!