Tuesday
June 30, 2015

Homework Help: Maths

Posted by Anonymous on Thursday, April 17, 2008 at 12:26pm.

1) In the arithmetic progression, the 8th term is twice the 4th term and the 20th term is 40. Find the common difference and the sum of the terms from the 8th to the 20th term inclusive.

2) Find the least number of terms of the AP, 1+3+5...that are required to make a sum exceeding 4000.
(?a=1,d=2)

Any help at all would be great

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