In a sweepstakes sponsored by Gemini Paper Products, 175,000 entries have been received. If 1 grand prize is drawn, and 3 first
1 answer:
Answer:
The correct answer are given by (A) ; (B)
.
Step-by-step explanation:
Total number of entries to the sweepstakes offered by Gemini Paper Products = 175,000.
Total number of prizes to be awarded includes 1 grand prize, 3 first prizes, 25 second prizes and 400 third prizes = 1 + 3 + 25 + 400 = 429.
(A) Required Probability for a person who has put one entry to win the grand prize is given by the fraction .
(B) Required Probability for a person who has put one entry to win any prize offered is given by .
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<h2>Answer with explanation:</h2>
A box contains 12 balls numbered 1 through 12.
Also the ball are drawn without replacement.
a)
The probability that the first ball had a smaller number on it.
i.e. the number on the first ball could be: {1,2,3}
Hence, the probability that the first ball had a smaller number on it is:
b)
The probability that the first ball has a even number on it is:
There are total 6 even numbers {2,4,6,8,10,12}
but 4 can't be considered as it comes on the second draw, so we are left with just 5 balls with even number.
Hence, the probability is: