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A look at Baby Book Tracker, a simple app for logging reading sessions with your baby, tracking progress over time, and sharing the routine with caregivers.

If we list all the natural numbers below 10 that are multiples of 3 or 5, we get 3, 5, 6 and 9. The sum of these multiples is 23.

Complete the method/function so that it converts dash/underscore delimited words into camel casing.

Write a function cakes(), which takes the recipe (object) and the available ingredients (also an object) and returns the maximum number of cakes Pete can bake (integer).

Implement a function likes :: [String] -> String, which must take in input array, containing the names of people who like an item. It must return the display text as shown in the examples.