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:

According to the question,

a₁ = – 10

a₂ = – 6

a₃ = – 2

a₄ = 2

a₂ – a₁ = 4

a₃ – a₂ = 4

a₄ – a₃ = 4

a₂ – a₁ = a₃ – a₂ = a₄ – a₃ = 4

Therefore, it’s an A.P with d = 4.