Question

xil) Which one is an AP?
a) 1, 2,4,5
b) 2,3,4,5,6.... c)-2-2,-4,-10
d) 0, 1, 10, 20​

Answer 1

option B is in AP with common difference "1"

Answer 2

Step-by-step explanation:

a) 1,2,4,5

d = 2-1 = 1

d = 4-2 = 2

d = 5-4 = 1

The difference between any two consecutive terms is not constant.

this sequence is not an AP