In a array x, count the number of times the number n appears in x.
for example: x = [1 2 3 4 3 2 1 2] and n = 2 the answer should be 3, because 2 appears 3 times in x
Which values occur exactly three times?
Find the alphabetic word product
Right and wrong
pressure to dB?
multiply an array by its position number
Reduce the logic
Remove multiples of N
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