Question

Quantos termos tem a P.A (252,254,...300)

Answer 1

an= a1+(n-1).r

300= 252+(n-1).(254-252)

300= 252+(n-1).2

300= 252+2n-2

300=254+2n

300-254=2n

46=2n

46/2=n

n= 23