Question

which of the following sequences are A.P. ? if they are A.P. find the common difference.

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Answer 1

Answer:

No it's not in Arithmetic Progression as

A1=1

A2=3

A3=6

A4=10

Ap is the one where the common difference is same but here when we do

A2-A1= 3-1 = 2

A3-A2=6-3=3

First case the common difference was 2 and in 2 nd case it is 3.

So it's not in AP.

Step-by-step explanation:

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Answer 2

Answer:

2,3,6,7,8,9,11,13 are in A.P

Step-by-step explanation:

Q 2) 3,5,7,9,11

      common difference (d) = 2

Q 3) 1,4,7,10

      d = 3

Q 6) 4,3,2,1

      d = -1

Q 7) 7,12,17,22 . . . . .

       d = 5

Q 8) -10,-13,-16,-19 . . . . .

       d = -3

Q 9) 2,6,10,14 . . . . .

       d = 4

Q 11) -50,-75,-100,-125 . . . . .

        d = -25

Q 13) 1, 3/2, 2, 5/2 . . . . .

         d = 1/2 = 0.5