Is 4,7,9,12 an arithmetic sequence?

Question

asked Aug 21, 2021 232k views

2 Answers

Robin Dehu · Answer 1 · 2021-08-22T04:46:46+0000

Answer:

Explanation:

If a₁, a₂, a₃, a₄, a₅, ... make an arithmetic sequence, then

aₙ - aₙ₋₁ = a₅ - a₄ = a₄ - a₃ = a₃ - a₂ = a₂ - a₁ = d (common difference)

7 - 4 = 3

9 - 7 = 2

different differences

Kingofzeal · Answer 2 · 2021-08-26T06:40:19+0000

Answer:

No. The differences between two elements should be same. For example 4-7-10-13 is a arithmetic sequence.

Explanation: