An integer is chosen between from 70 to 100,find the probability that it is a)a prime number and b)divisible by 7
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Answer:
3/14 & 1/7
Step-by-step explanation:
A. Favourable outcomes = 71 ,73 ,79,83,89,97=6
Total outcomes = 99 - 71 = 28
Probability(prime number ) = 6/28= 3/14.
B. Since, the numbers between 70 and 100 which are divisible by 7,
77, 84, 91, 98,
B. Also, the total numbers between 70 and 100 = 28,
And the
Numbers between 70 and 100 which are divisible by 7 are
77,84,91,98
Hence,
The probability of a number between 70 and 100 is divisible by 7
= 4/28
= 1/7
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