five (including 20)
If you are including 10 and 30 there are 11 even numbers. If you are not counting 10 and 30 there are 9 even numbers between 10 and 30.
they are 20
well, let's break it down. First, the even numbers between 1 and 11 are, 2,4,6,8,10. Now 2+4=6, 6+6=12, 8+12=20, 20+10=30. So, to answer your question simply, the sum of even numbers between 1 and 11, is 30.
The probability is 11/21.
Not even = odd. 1, 3, 5, 7, 9, 11, 13, 15, 17, 19 10 numbers (20 / 2 = 10).
9
11, 13, 17, and 19
There are 4 prime numbers between 10 and 20. They are 11, 13, 17, and 19.
The answer is 20C9 = 20!/[9!*11!] = 167,960
There are 8 prime numbers between 1 and 20. The numbers are 2, 3, 5, 7, 11, 13, 17, and 19.
the even numbers between 10 and 20 are :10,12,14,16,18,20 so there are 4 even numbers between 10 and 20 (without counting the 10 and 20 =)) i hope this helped u =)
There are nine numbers between 10 and 20: 11, 12, 13, 14, 15, 16, 17, 18, and 19.