# C1 Series/Sequence help.

Watch
#1
Find the sum of all the intergers between 1 and 1000 which are divisible by 7.

So I think that a = 7 and d = 7

but i'm not sure what formula to plug any of this into :/
0
6 years ago
#2
(Original post by I_Like_Maths)
Find the sum of all the intergers between 1 and 1000 which are divisible by 7.

So I think that a = 7 and d = 7

but i'm not sure what formula to plug any of this into :/
Sounds good

How many terms will there be? What will be the last term?

That should help you to use the sum of such a series.
0
X

new posts
Back
to top
Latest
My Feed

### Oops, nobody has postedin the last few hours.

Why not re-start the conversation?

see more

### See more of what you like onThe Student Room

You can personalise what you see on TSR. Tell us a little about yourself to get started.

### Poll

Join the discussion

#### Feeling behind at school/college? What is the best thing your teachers could to help you catch up?

Extra compulsory independent learning activities (eg, homework tasks) (3)
3.53%
Run extra compulsory lessons or workshops (12)
14.12%
Focus on making the normal lesson time with them as high quality as possible (16)
18.82%
Focus on making the normal learning resources as high quality/accessible as possible (9)
10.59%
Provide extra optional activities, lessons and/or workshops (29)
34.12%
Assess students, decide who needs extra support and focus on these students (16)
18.82%