Please wait...
1800-212-7858 (Toll Free)
9:00am - 8:00pm IST all days

or

Thanks, You will receive a call shortly.
Customer Support

You are very important to us

For any content/service related issues please contact on this toll free number

022-62211530

Mon to Sat - 11 AM to 8 PM

alogorithm

Asked by 13th February 2009, 10:23 PM
Answered by Expert
Answer:

Assum that the first term of the A.P. is a and the common difference is d,

Then the nth term is given by the formula

nth term= a+(n-1)d

Acording to the question,

required expression =[a+(n-1)d]-[a+(k-1)d]=(n-k)d

when the 20th term is 10 more than the 18 th term,

(a+19d)=10+(a+17d)

So,

2d=10

d=5

Answered by Expert 14th February 2009, 8:54 AM
Rate this answer
  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10

You have rated this answer /10

Your answer has been posted successfully!