Question

The list of numbers – 10, – 6, – 2, 2,… is

(A) an AP with d = – 16

(B) an AP with d = 4

(C) an AP with d = – 4

(D) not an AP

Answer 1

(B) an AP with d = 4

Explanation:

According to the question,

a_{1 =} – 10

a_{2 =} – 6

a_{3 =} – 2

a_{4 =} 2

a_{2 –} a_{1 =} 4

a_{3 –} a_{2 =} 4

a_{4 –} a_{3 =} 4

a₂ – a_{1 =} a_{3 –} a_{2 =} a_{4 –} a_{3 =} 4

Therefore, it’s an A.P with d = 4