There are 4 boxes coloured red,yellow,green,blue.how many combinations are there for atleast one green box or one red box is selected
Option
A.5
B.9
C.6
D.1

• at least one red=(R,Y)(R,G)(R,B) = 3 cominations
  at least one green=(G,Y),(G,B) = 2 combinations
  
  total = 3+2 = 5 combinations
  A.5
• 10 years agoHelpfull: Yes(45) No(3)
• there will be 5 combination.. because a combination of red and green will be common in both the cases.
• 9 years agoHelpfull: Yes(3) No(1)
• there can be 5 combinations
• 9 years agoHelpfull: Yes(2) No(1)
• 4 boxes r present ..we had 2 choose green or red.
  combination is asked..so
  4c2 will be ans..4!/2!2!=4*3*2/2*2=6
• 10 years agoHelpfull: Yes(1) No(7)
• 4c1+4c1=6
  
• 10 years agoHelpfull: Yes(0) No(4)
• 12h-->45*x
  y h--> 13*x
  y=12*5*xx34
  5
• 10 years agoHelpfull: Yes(0) No(2)
• atleast 1 green: 1c1*3c1=3
  atleast 1 red:1c1*3c1=3
  adding both cases:3+3=6
• 10 years agoHelpfull: Yes(0) No(0)
• How u guys came to know tht only two box are selected ....
  Please clarify
• 9 years agoHelpfull: Yes(0) No(0)
• atleast 1 green: 1c1*3c1=3
  atleast 1 red:1c1*2c1=2
  adding both cases:3+2=5
• 9 years agoHelpfull: Yes(0) No(0)
• 3c1+3c1=6 i am nt sure....if wrong tell me the correct answer
  
• 9 years agoHelpfull: Yes(0) No(0)