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On a number line, the digits from 10 to 99 are all two digit numbers. How many numeber are that? There is a short cut. You can subtract 10 from 99 and that gives you the number of numbers between 10 and 99 including 10, but you need to add one more to include 99 as well. So, 10 from 99 is 89 adding 1 is 90 ,which is the amount of numbers total that are two digit. The probability of guessing a two digit number is 1/90 =D
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What is the probability of rolling the number 1 when rolling two dice?
The probability is 11/36.
What is the probability of rolling two number cubes simultaneously and getting different numbers?
The probability is 5/6.
Two dices are thrown simultaneously what is the probability that we get an even number on 1 of the dice?
If two dice (not dices!) are thrown then the probability that you get an even number on one die is 27/36 = 3/4
What is the probability of rolling a prime number on a six sided dice?
The probability is 1 out of two. The primes you can roll are 2,3, and 5.
What is the probability of two consecutive different coin flips?
The probability is 1/2 if the coin is flipped only twice. As the number of flips increases, the probability approaches 1.
