How many distinct 4-letter words can be formed from the word LOGAZBU if Z is to be used OR all vowels are to be used? (ans; 552)

Q: Evaluate if x=4,8,3,-2 ∑x ∑x+1 ∑(x+1) 3∑x - 4

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A:

Q: How many distinguishable words, whether they have meaning or not, can be made using all the letters…

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