Question

Find the 10th term of AP 3 7 11.......​

Answer 1

$a = 3\\\\d = 7 - 3 = 4\\\\a_1_0=a+(10-1)d\\\\a_1_0=3+(9)4\\\\a_1_0=3+36\\\\a_1_0=39$

Answer 2

Answer:

refer to the attachment