Question

Write the first four terms of AP when the first term (a) and the common difference (d) ??
a=20 , d=20 ​

Answer 1

Answer:

20,40,60,80

Step-by-step explanation:

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Answer 2

Answer:

20,40,60,80

Step-by-step explanation:

a1 = 20

a2 = a+d = 20+20 = 40

a3 = a+2d = 20+2x20 = 20+40 = 60

a4 = a+3d = 20+3x20 = 20+60 = 80