Question

the no. of thr terms in theA.P. 2,5, 8,.....59 is 20​

Answer 1

Answer:

let a & d be the first term & the common difference respectively

a = 2

d = 5 - 2 = 3

$t_{n}=59$

$t_{n}=a+(n-1)d\\\\2+(n-1)3=59\\\\(n-1)3=57\\\\n-1=\frac{57}{3}\\\\n-1=19\\\\n=20$

therefore there are 20 terms in this AP