Difference between subarray, subset & subsequence

Question

I\'m a bit confused between subarray, subsequence & subset

if I have {1,2,3,4}

then

subsequence can be {1,2,4} OR

Answer 1

Per my understanding, for example, we have a list say [3,5,7,8,9]. here

subset doesn’t need to maintain order and has non-contiguous behavior. For example, [9,3] is a subset

subsequence maintain order and has non-contiguous behavior. For example, [5,8,9] is a subsequence

subarray maintains order and has contiguous behavior. For example, [8,9] is a subarray