Question

Is series 7, 10, 14, 19, ...an A.P.? Give reason.​

Answer 1

Answer:

a= 7

a2-a1= 10-7=3

a3-a2=14-10= 4

a4-a3= 19-14= 5

From the above we get tht differences are not similar.

Therefore the above sequence is not an AP.

Answer 2

$\huge{\mathcal{\green{\underline{Answer}}}}$

We generally use an algorithm to determine that the series is an AP or not ,

If the common differnce are equal then the series forms an AP , Hence

Common difference = a2 - a1 = 10-7 = 3

a3 - a2 = 14-10 = 4

The common difference is not equal hence the above series doesn,t forma an AP ☑