1)

Three randomly choosen non negative intergers x,y and z are found to satisfy the equation x+y+z=10 , Then the probability that z is even is 


A) 12

B) 3655

C) 611

D) 511

Answer:

Option C

Explanation:

Sample space  12C2

Number of possibilities for z is even

   z=011C1

  z=29C1

  z=47C1

z=65C1

z=83C1

z=101C1

 Total=36

  Probability=3666=611