How many positive even integers less than 100 contain digits 3 or 9? Choose the most appropriate option:	A) 16	B) 17	C) 18	D) 19	E) 10
Two digit numbers:   3 at tens place: 30,32,34,36,38   9 at tens place: 90,92,94,96,98   If 3 and 7 is at units place, the number cant be even   Total:5+5= 
<gadget id="calculator">5+5</gadget>
<output>10</output>
10   Answer 10
<result>E</result>
How many positive even integers less than 100 contain digits 3 or 9?