Assuming the dice rolls are independent, the probability of getting doubles is
. (That is, there are 6 ways of getting doubles, and the probability of getting a given face is 1/6.)
So the event of getting doubles in a set number of
trials is binomially distributed with
(and so
).
You're given that
. If
is a random variable representing the number of doubles obtained in
trials, then the probability of getting
doubles is given by the PMF,
<span>|−4| < |−5|
means
4<5 (true)
answer is
</span><span>|−4| < |−5|</span>
Less than. -20 is not the same as positive 20
Answer:
4a^4-4b^4-5a^2b^2
Step-by-step explanation:
find common variables and subtract/add
a^4+3a^4=4a^4
-2b^4-2b^4=-4b^4
0-5a^2b^2=-5a^2b^2
apply
4a^4-4b^4-5a^2b^2