Wednesday

July 23, 2014

July 23, 2014

Posted by **Joyce** on Sunday, August 19, 2012 at 12:40pm.

- Math -
**animesh kumar**, Sunday, August 19, 2012 at 1:05pm1 + 3 + 5 +........2n-1....

1st term = 1

40th term = 2*40-1 = 79

arith metic progression

s = n/2(a1+an)

= 40/2(1+79) = 1600

**Related Questions**

Math - Find the sum of the first 35 consecutive odd numbers. What is the sum of ...

SUMS? - what is the sum of the first towo odd numbers? what s the sum of the ...

Math - 5 times the least of three consecutive odd numbers is 35 more than twice ...

math - If the first of 1000 consecutive whole numbers is odd, their sum must be ...

Algebra - 5 times the least of three consecutive odd numbers is 35 more than ...

MATH - What is the sum of the first 70 consecutive odd numbers?

math check - Posted by TchrWill on Thursday, July 14, 2005 at 5:44pm. 2.)The sum...

Math - Sum the first two odd numbers, then the first three, the first four, and ...

Math 130 - Sum the first two odd numbers, then the first three, the first four...

Math - Nine consecutive odd whole numbers sum to 243. Find the sum if the first...