4. Find the common difference of the following A.P:1, -2, -5,-8,….​

2 thoughts on “4. Find the common difference of the following A.P:1, -2, -5,-8,….​”

1. Answer:

   t1 = 1

   t2 = -2

   t3 = -5

   t4 = -8

   common difference (d) = t2 – t1 = -2-1 = -3

   = t3-t2= -5 – (-2) = -3

   hence, the common difference is -3

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2. To find the common difference
   Formula is :-
   D= a2-a1
   -2-1 = -3

   So -3 is the common difference between A1 and a2
   Do the same prossece with A3 and a2
   D= a3-a2 = -5-(-2)=-3

   So the difference between all the A.p is -3

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