there are 100 cards in a bag on which number from 1 to 100 are written .a card is taken out from the bag at random . find the probability that the number on the selected card ( i ) is divisible by 9 and is a perfect square. (ii) is a prime number greater than 80 .
Answers
Answer:
1) Total cards =100
the no those are divisible by 9 and are perfect square are 9,36,81
Therefore probability that the number on the selected card is divisible by 9 and is a perfect square is 3/100
2)Total cards =100
the prime numbers are greater than 80 are 83,89,97
Therefore probability that the number on the selected card is a prime number greater than 100 is 3/100
Answer:
I. 3/100 or 3%
II. 3/100 or 3%
Step-by-step explanation:
Probability = Number of events divided by number of total outcomes
I. Between 1 and 100, there are 11 multiples of 9: 9,18,27,36,45,54,63,72,81,90,99
Out of these, there are 3 perfect square: 9,36,81
So, number of total outcomes = 100
And number of events = 3
Probability = 3/100
II. There are 3 prime numbers greater than 80: 83,89,97
So, number of total outcomes = 100
And, number of events = 3
Probability = 3/100
Hope it helps :)
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