Problem 11 In how many ways can you distribute n pennies to k children if each child is supposed to get at least 5 pennies? Problem 12 A toy shop has 15 airplanes, 15 buses, 17 trains, and 20 bikes in the stock. How many ways are there for a person to take 15 toys home if all the airplanes are identical, all the buses are identical, all the trains are identical and all the bikes are identical? а. b. How many ways are there for a person to take 15 toys home if all the airplanes are distinct, all the buses are distinct, all the trains are distinct and all the bikes are distinct? How many ways are there for a person to take 25 toys home if all the airplanes are identical, all the buses are identical, all the trains are identical and all the bikes are identical? с.

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Chapter2: Second-order Linear Odes
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Problem 11
In how many ways can you distribute n
pennies to k children if each child is supposed to get at least 5 pennies?
Problem 12
A toy shop has 15 airplanes, 15 buses, 17 trains, and 20 bikes in the stock.
How many ways are there for a person to take 15 toys home if all the airplanes are identical, all the buses are
identical, all the trains are identical and all the bikes are identical?
а.
How many ways are there for a person to take 15 toys home if all the airplanes are distinct, all the buses are
distinct, all the trains are distinct and all the bikes are distinct?
b.
How many ways are there for a person to take 25 toys home if all the airplanes are identical, all the buses are
с.
identical, all the trains are identical and all the bikes are identical?
Transcribed Image Text:Problem 11 In how many ways can you distribute n pennies to k children if each child is supposed to get at least 5 pennies? Problem 12 A toy shop has 15 airplanes, 15 buses, 17 trains, and 20 bikes in the stock. How many ways are there for a person to take 15 toys home if all the airplanes are identical, all the buses are identical, all the trains are identical and all the bikes are identical? а. How many ways are there for a person to take 15 toys home if all the airplanes are distinct, all the buses are distinct, all the trains are distinct and all the bikes are distinct? b. How many ways are there for a person to take 25 toys home if all the airplanes are identical, all the buses are с. identical, all the trains are identical and all the bikes are identical?
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