Explanation :
See the matchsticks number carefully,
the number 8 has 6 joints,
the alternate number 9 has 5 joints,
the number 5 has 4 joints,
3 has 3 joints,
7 has 2 joints,
therefore the next number in the line that should have 1 joint which is 1.
Matchstick Image : Solved Answer Identify the next number in Sequence
Matchstick Image : Answer Identify the next number in Sequence