Answer:
a) 4/65 b) 13/65 c) 12/65 d) 19/65
Explanation:
Probability is the likelihood or chance that an event might occur.
Probability = expected outcome of event/Total outcome of event
If a box contains cards bearing numbers from 6 to 70, the total outcome will be the total number present from 6 to 70 which is 65
a) The amount of one digit number we have are 4 i.e {6,7,8,9}. This will be our expected outcome in this case.
The probability that the number drawn bears a one digit number will be 4/65
b) For numbers divisible by 5, the numbers that are divisible by 5 from the number drawn are {10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70}
The total expected outcome in this case = 13
The probability that the number drawn is divisible by 5 = 13/65
c) For odd numbers less than 30, they are {7,9,11,13,15,17,19,21,23,25,27,29}
The total expected outcome in this case = 12
The probability that the number drawn are odd numbers less than 30 = 12/65
d) For composite number between 50 and 70, this are numbers that are within this range and they includes {51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69}
The total expected outcome in this case = 19
The probability that the number drawn are composite numbers between 50 and 70= 19/65