Question

The list of numbers – 10, – 6, – 2, 2, ... is ______.

Options

• An AP with d = – 16

• An AP with d = 4

• An AP with d = – 4

• Not an AP

Answer 1

The list of numbers – 10, – 6, – 2, 2, ... is an AP with d = 4.

Explanation:

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