Question

21^st term of an AP whose first two terms are -3 and 4 is *

Answer 1

Answer:

137.

Step-by-step explanation:

Here, a = first term =-3

And d = common difference = 4-(-3) = 7.

Therefore, 21st term = a + (21-1) d

                                  = -3 + 20 * 7

                                  = 137.