Question

Rita’s Maths book is 25 mm thick and her Science book is 4.5cm thick. Which book is thicker and by how much?​

Answer 1

Answer:

Decide on how many books will be placed on each shelf. That is equivalent to writing on piece of paper 10 nonnegative (zeros are here allowed in c they are not!) integers x1,x2,…,x10x1,x2,…,x10 so that they add up to 25. For i=1,2,…,10i=1,2,…,10, xixi represents the number of books that will be placed on the ii-th shelf. The total number of ways that you can conduct this step is equal to the number of solutions to the 

Answer 2

Answer:

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