Question

10. Which of the following form an A.P ?
(a) 2, -2, 2. -2,
(b) 4, 10, 16, 22.​

Answer 1

Answer:

(a) a1 = 2 ,a2 = -2

d = a2-a1

= -2-2=-4

a3-a2 = 2-(-2)= 2+2= 4

not an AP

(b) a1=4 ,a2 = 10

d = 10-4=6

16-10= 6

AP series

Answer 2

Answer:

b) the option B is an AP

Step-by-step explanation:

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