Which number does not belong in this group 7 4 11 19?

Answer 1

Oh, dude, let me put on my super serious math hat for this one. So, like, the number 4 doesn't belong because if you add 3 to each number in the group, you get 10, 7, 14, and 22. So, like, 4 is just chilling there, not following the cool math pattern.

Answer 2

4 doesn't belong:

-- it's even, the others are all odd

-- it's a composite number, the others are all primes

-- it's less than 5, the others are all greater than 5

-- it's less than all the others, all the others are greater than it

-- it's a perfect square, none of the others is

-- it has only 1 syllable, the others have 2 or 3 syllables

-- it's spelled with less than 5 letters, all the others are spelled with more than 5 letters