Answer:
1/6^4.
Step-by-step explanation:
Multiply denominators.
6*6*6*6 = 1,296
Your answers are 1/6^4 and 1/1296.
The probability of the first item being good is 11/15.
Since we have taken 1 item out the remaining total is now 14, so the probability of getting a defective item is now 4/14.
Now you multiply the probabilities together to get (11/15)(2/7)=22/105
M=ch x 4 next 3 = mch (34)
Put 16 where n is, then do the arithmetic.
... a(16) = -6 + 3(16 -1)
... a(16) = -6 + 45
... a(16) = 39