Question

the 5th term of the A.P in 3,7,11
a)23 b) 4 c) 19 d)15​

Answer 1

Answer:

(c)19

Step-by-step explanation:

5th term=a+4d

here,a=3 and d=4

so,5th term=3+4x4

=3+16

=19

Answer 2

A.P → 3, 7, 11, 14 ...

a = First term = 3

d = Common Difference = 7 - 3 = 4

n = Required term = 5

an = a + (n - 1)d

⇒ a₅ = 3 + (5 - 1)4

⇒ a₅ = 3 + 4(4)

⇒ a₅ = 3 + 16

∴ a₅ = 19