Question

Find the 20th term in the AP 3,7,11

Answer 1

Step-by-step explanation:

$tn = a + (n - 1)d$

$t20 = 3 + (20 - 1) \times 4$

$t20 = 3 + (19 \times 4)$

$t20 = 3 + 76$

$t20 = 79$