Two pyramids are thrown with faces 1,2,4,6. Find the probability to get a sum of even number on an their faces? Choose the correct answer.
A) 5/8  B) 3/4  C) 1/4  D) 7/4  E) 3/5
1 pyramid can show 4 different kind of arrangements   1,2,4=7   1,2,6=9   1,4,6=11   2,4,6=12   So, out of 4 outcomes   3 are odd and 1 is even.   In question given two pyramids are thrown.   So, to make some of their faces as even   Condition 1: some of both individual faces of each pyramid is odd   3/4 * 3/4   =9/16   Condition 2: some of both individual faces of pyramid is even   1/4 + 1/4   =1/16   Total such conditions = 9/16 + 1/16   = 10/16   = 5/8   5/8NSWER:5/8
<result>A</result>
Two pyramids are thrown with faces 1,2,4,6. Find the probability to get a sum of even number on an their faces?