Each of the letters in the word CALCULATOR are on separate cards, face down on the table. If you pick a card at random, what is the probability that its letter will be C or A?
there are 10 letters in all
4 of them are C or A
so, what do you think?
To find the probability of picking a card with the letter C or A from the word CALCULATOR, we need to determine the total number of cards that have either the letter C or A, and divide it by the total number of cards in the word.
Let's break down the process step by step:
Step 1: Count the number of cards with the letter C or A
To do this, we need to identify all the cards that have the letter C or A. In the word CALCULATOR, there are two cards with the letter C and one card with the letter A. So, there are a total of 2 + 1 = 3 cards with either C or A.
Step 2: Count the total number of cards in the word
The word CALCULATOR consists of 10 letters, hence there are 10 cards in total.
Step 3: Calculate the probability
To find the probability, we divide the number of favorable outcomes (cards with C or A) by the total number of possible outcomes (total cards in the word).
Probability = Number of favorable outcomes / Total number of possible outcomes
In this case, the probability of selecting a card with the letter C or A is:
3 (number of cards with C or A) / 10 (total number of cards) = 3/10
Therefore, the probability of picking a card with the letter C or A from the word CALCULATOR is 3/10 or 30%.