Hi☺️=> To prove : an = 10 - 3N is an A.P.⏬⏬a(n-1) = 10 - 3(n-1) = 10 - 3n + 3= 13 - 3nan - a(n-1) = 10 - 3n - 10 + 3n - 3= -3Hence it is an A.P. Hope it helps you out✌️Be BRAINLY ^_^✴️GOOD NIGHT✴️
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