Question

19. (41)n - (14)n} is divisible by 27.
20. (4n + 15n-1) is divisible by 9.
21. (32n+2 - 8n -9) is divisible by 8.
22. (23n - 1) is a multiple of 7.
can u solve them for me...please i need to submit hurrily​

Answer 1

19.n=1
20.n=1
21.15/24
22.8/23