A artist donates 4 different paintings anf 5 different vases in a museum. The donations will be arranged in a row. Find the po'ssible arrangement if: a. the three paintings must be placed together' b. There are no restrictions c. The vases must be placed together

Q: use here.

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Q: 2. Specificity

A: here use specificity formula

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A: The following solution is given below:

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A: Here use permutations

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A: (4) The number of ways is,

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A: HERE standard normal distribution , so mean = 0 standard deviation = 1

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