Answer:
0.375, 0.125, 0.5
Step-by-step explanation:
given that you are taking a T/F exam and you have no idea at all about the answers to the last three questions.
Probability for correct guess = 0.5 remains constant for each of the three questions
X - no of questions is binomial with n =3 and p = 0.5
1) the probability that you guessed right on exactly one of the three questions
= P(X=1)
= 
2) the probability that you guessed right on zero of the three questions
= 
3) the probability that you guessed right on at least two of the questions
=
What do you really mean..?
Answer:
A. 4/15 and 0.26 repeating
Step-by-step explanation:
As we see in the long division, 4/15 is equal to 0.26666666666666666666666 (or. 0.26 repeating).
4/15
4 doesn't go into 15, so add a zero.
4.0/15
40 goes into 15 twice
40 - 30 is 10. 10 is less than 15 so add a 0.
4.00
100 goes into 15 6 times.
100 - 90 is 10. 10 is less than 15, so add a 0.
The 100 into 15 process repeats, so there's your answer.
Answer:
Average cost per litre of diesel = rs 8.00
Step-by-step explanation:
Amount spent on diesel each year = rs 4000
Price of a litre of diesel in the first year = rs 7.50
Price of a litre of diesel in the second year = rs 8.00
Price of a litre of diesel in the third year = rs 8.50
Average cost per litre of diesel = 
where n is the number of years.
Average cost per litre of diesel = 
= 
= 8
Average cost per litre of diesel is rs 8.00
So that he buys an average of 500 (i.e 
) litres every year.
X-y=-1
x+y=5
y=x+1
x+x+1=5
2x+1=5
2x=4
x=2
y=x+1
y=2+1
y=3
