Question

ULF 8 For what value of n are the nth terms of the following two A.P's the same? (i) 1,7,13,19​

Answer 1

a=1

d=7-1=6

an=a+(n-1)d

19=a+(n-1)×6

19=1+6n-6

19+5=6n

24=6n

n=24/6

n=4

Thanks