In a box, there are 4 green, 5 black and 7 red pencils. One pen is picked up randomly. What is the probability that it is neither black nor red?
Pick:
A) 2/5
B) 1/5
C) 1/2
D) 1/3
E) 1/4
Explanation :   Neither black nor red means the pencils drawn is green.   Total number of outcomes = (4+5+7)= 
<gadget id="calculator">(4+5+7)</gadget>
<output>16</output>
16.   Number of Favourable outcomes= 4 = Number of green pencils.   Hence, Probability of the event = 4/16 = 1/4.   Answer : 1/4
<result>E</result>
In a box, there are 4 green, 5 black and 7 red pencils. One pen is picked up randomly. What is the probability that it is neither black nor red?