ARITHMETIC PROGRESSION..............

Asked by krithika.rrrr | 5th May, 2009, 12:39: AM

Expert Answer:

pl clarify whether the terms of the A.P. are

a,2a,b,(a-6-b)

If they are so,

 then we proceed like this.

The  common difference  d between any two consecutive terms of an A.P.  must be equal, so

2a-a=d

b-2a=d

a-6-b-b=d

the nth term of an A.P. with first term a and common diff d is given by

a+(n-1)d

So put n =100 and you can find the 100th term.

Do get back for any further doubts.

Answered by  | 5th May, 2009, 08:41: AM

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