a set consists of 12 numbers, all are even or multiple of 5. if 4 numbers are even and 10 numbers are multiple of 5, how many numbers is multiple of 10?
Pick one:
A) 0
B) 1
C) 2
D) 3
E) 5
<gadget id="calculator">12 - 10</gadget>
<output>2</output>

<result>C</result>
a set consists of 12 numbers, all are even or multiple of 5. if 4 numbers are even and 10 numbers are multiple of 5, how many numbers is multiple of 10?
subtract(12, 10)
"{ total } = { even } + { multiple of 5 } - { both } + { nether } . since { neither } = 0 ( allare even or multiple of 5 ) then : 12 = 4 + 10 - { both } + 0 ; { both } = 2 ( so 1 number is both even and multiple of 5 , so it must be a multiple of 10 ) . answer : c ."