How many words, with or without meaning, each of 3 vowels and 2 consonants can be formed from the letters of the word INVOLUTE?
Question
How many words, with or without meaning, each of 3 vowels and 2 consonants can be formed from the letters of the word INVOLUTE?
Solution
To find the number of words that can be formed from the letters of the word "INVOLUTE" with 3 vowels and 2 consonants, we can use the concept of permutations.
Step 1: Count the number of vowels and consonants in the word "INVOLUTE".
- There are 3 vowels: I, O, and U.
- There are 5 consonants: N, V, L, T, and E.
Step 2: Determine the number of ways to arrange the vowels.
- Since we need to choose 3 vowels, we can use the formula for permutations: nPr = n! / (n - r)!
- In this case, n = 3 (number of vowels) and r = 3 (number of vowels we need to choose).
- So, the number of ways to arrange the vowels is 3P3 = 3! / (3 - 3)! = 3! / 0! = 3! = 3 * 2 * 1 = 6.
Step 3: Determine the number of ways to arrange the consonants.
- Similarly, we need to choose 2 consonants out of 5.
- So, the number of ways to arrange the consonants is 5P2 = 5! / (5 - 2)! = 5! / 3! = 5 * 4 = 20.
Step 4: Multiply the number of ways to arrange the vowels and consonants.
- Since the arrangement of vowels and consonants is independent, we can multiply the number of ways to arrange them.
- So, the total number of words that can be formed is 6 * 20 = 120.
Therefore, there are 120 words, with or without meaning, that can be formed from the letters of the word "INVOLUTE" with 3 vowels and 2 consonants.
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