There are a number of Pythagorean triplets possible.
Some of them are:
(3, 4, 5)
(5, 12, 13)
(7, 24, 25)
(9, 40, 41)
(11, 60, 61)
Also, note that if we multiply any of these triplet with a same number, then we will get another triplet.
For example:
By multiplying every number of the triplet (3, 4, 5) with 2, we get (6, 8, 10) which is another Pythagorean triplet.