Question 253808
The probability that Robin Hood hits a target is 5/6. 
The probability that Robin Hood does not hit target = 1-5/6 =1/6
The probability that Little John hits a target is 1/7.
The probability that Little John does not hit target = 1 - 1/7 = 6/7
Robin Hood and Little John each shoot one arrow at the target, what is the probability that they both miss the target = (1/6)*(6/7)
                                           = 1/7