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JulsSmile [24]
3 years ago
6

Winning the jackpot in a particular lottery requires that you select the correct four numbers between 1 and 42 ​and, in a separa

te​ drawing, you must also select the correct single number between 1 and 30. Find the probability of winning the jackpot.
Mathematics
2 answers:
Delvig [45]3 years ago
7 0

Answer:

Probability of winning the jackpot = 0.000000297

Step-by-step explanation:

Here, there are two sequence of events

First event (m) - choosing four  number between 1 and 42

Second event (n) - Select a single number between 1 and 30

Thus, the number of ways the two events can occur is

m * n

Number of ways the first event can occur is equal to

^{42}C_4

On solving we get

\frac{42!}{4! * 38!}\\ = \frac{42*41*40*39*38!}{4! * 38!} \\= \frac{42*41*40*39}{4*3*2*1} \\

= 111930 ways

The number of ways the two events can occur is

111930 * 30 = 3357900 ways

Probability of winning the jackpot

\frac{1}{3357900} \\

Probability of winning the jackpot = 0.000000297

NARA [144]3 years ago
4 0

Answer:

\dfrac{1}{3,357,900}

Step-by-step explanation:

There are

C^{42}_4=\dfrac{42!}{4!(42-4)!}=\dfrac{42!}{4!\cdot 38!}=\dfrac{38!\cdot 39\cdot 40\cdot 41\cdot 42}{2\cdot 3\cdot 4\cdot 38!}=39\cdot 10\cdot 41\cdot 7=111,930

different ways to select the  four numbers between 1 and 42. Only one of this ways is correct (successful to win).

There are 30 different ways select the single number between 1 and 30. Only one of them is correct.

The  probability of winning the jackpot is

\dfrac{1}{111,930}\cdot \dfrac{1}{30}=\dfrac{1}{3,357,900}

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