## whatevs 3 years ago What is the sum of a 6–term geometric series if the first term is 20 and the last term is 336,140? 392,160 411,768 372,552 431,376

1. Ishaan94

$\frac{6}{2}(20 + 336,140)$

2. whatevs

1068.42

3. saifoo.khan

Hello Lahore! xD

4. whatevs

Lahori?

5. whatevs

saeed ajmal is from Lahore?

6. saifoo.khan

You are from Lahore. idk about Ajmal. im not not that much into cricket. Lahori was a typo. =)

7. whatevs

oh..no im from Karachi...

8. saifoo.khan

Wait. u said u are from Lahore! :O

9. whatevs

no i didnt...

10. lilg132

how did you get 1068.42 i dont get it

11. saifoo.khan

Lie detection!

12. whatevs

I have been there..but i am from karachi..

13. saifoo.khan

:O

14. saifoo.khan

Girls change their mind so often.. sign..

15. whatevs

Your prolly thinking of someone else

16. lilg132

i am from london now someone tell me please =(

17. Ishaan94

uh oh i read that mathematics series, sorry

18. saifoo.khan

sigh*

19. saifoo.khan

Nope, it was you!! i remember very clearly..

20. whatevs

why would I lie about being from lahore? pstch Karachi is like awesome..

21. Ishaan94

ugh auto-correct, arithmetic not mathematics

22. whatevs

geometric series

23. whatevs

Although, my grandfather was from India.I am half indian and half Paki...but more on Paki side cuz both my parents are from Karachi

24. Ishaan94

$20 \times \frac{1 - r^7}{1 - r}$ $r^5 = \frac{336,140}{20}$

25. whatevs

16,807

26. saifoo.khan

Same here, my grandies are from India as well. =D Correct, Khi is Awesome!

27. lilg132

and its the opposite for me mine were from pakistan lol

28. whatevs

thts cool..lol @lilg132

29. saifoo.khan

LOL @lil

30. Ishaan94

Sorry Sum should be $20 \times \frac{1 - r^6}{1 - r}$ Cool!@Saifoo, whatevs and lilg

31. Ishaan94

ugh I am confused please ignore me and my posts lilg and saifoo please help whatevs //something is wrong with me today :-/

32. whatevs

I am confused too..its ok Ishaan..thanks for helping...I'll just go with the first option..

33. lilg132

its 4 in the morning for me and i think that maths is getting to me ahaha see you all next time :p gdnightt

34. whatevs

goodnight..