How many even integers n, such that 20<=n<=220 are of the form 3k+4, where k is any natural number?  Select:	A) 28	B) 31	C) 34	D) 37	E) 40
The first number is 22 = 16+6(1).   We can continue adding 6 to make a list: 22, 28, 34,...   The last number is 220 = 16+6(34)   There are 34 numbers in the list.   The answer is 34.
<result>C</result>
How many even integers n, such that 20<=n<=220 are of the form 3k+4, where k is any natural number?