Question

there are three terms of arithmetic sequence
a1=decrease by 5
a2=decrease by 1
a3=twice the original term

find the a3..???

Answer 1

LoL Derek ! XD

Answer 2

is the common difference also given ?

Answer 3

nope

Answer 4

its 11

Answer 5

Given yung Common Difference ! 11 :P

Answer 6

common difference = A2-A1 = A3-A2 = 11

Answer 7

the common difference is 11, sorry. xD

Answer 8

This is written confusingly...

a1=decrease by 5
a2=decrease by 1
a3=twice the original term

decrease what by 5??

Answer 9

A3-A2 = 11
2n - (n-1) =11
can you find 'n' from here ??

Answer 10

the first term is decreased by5

Answer 11

true! wording are really confusing and question is really weird!

Answer 12

The first term is decreased by 5 to make what... ? the second term? itself? It doesn't make a lot of sense.

Answer 13

yup it really doesn't

Answer 14

@agent0smith look at this also
http://openstudy.com/study#/updates/51138785e4b0e554778acff1
better notations

Answer 15

yup it really doesn't make any sense

Answer 16

That one makes a lot more sense. Lets use that question.

Answer 17

unfortunately no... thatsweird too...
A2-A1 is not 11 actually....

Answer 18

hahahaha. xD that's my classmate. xD we have the same question

Answer 19

lol .ok :)

Answer 20

Yes !

Answer 21

and is ploeng in love with derek ?? O.o

Answer 22

hahaha. xD NO!!!!!!!!!!!!!!!

Answer 23

nope :))

Answer 24

okk. just wondering...

Answer 25

The other question seems broken too...

Answer 26

Yah ! I think so .

Answer 27

thats what i said...

Answer 28

2n-n-1=11
n=12
substitute it gave me 7,11 and 24

Answer 29

doesn't match with the common difference

Answer 30

ok...i guess, 11 as common difference(d) should naot have been given.
in that case d = A2 - A1 = 4
then A3-A2 = 4
and find 'n'.

Answer 31

n=3 will give u a3 = 2n = 2*3 =6