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531 B

Exercises: Guard Duty

Exercise 1

If you start with the otherwise statement, all grades will be F's.

Exercise 2

It will still work, but the result won't be as expected. E.g. if you move | y >= 0.9 = 'A' below the B grade, then any grade of 80 or higher will be a B, because 0.9 >= 0.8 is true and thus it matches with the grade for B.

Exercise 3

(b)

Exercise 4

[a]

Exercise 5

pal :: [a] -> Bool

Exercise 6

(c)

Exercise 7

Ord a => a

Exercise 8

numbers :: (Ord a, Num a, Num b) => a -> b