Posted by **Sequence and series** on Saturday, November 26, 2011 at 9:20am.

The 4th term of an A.P.is 37 and the 6th term is 12 more than the 4th term.find the 1st and the 7th term of the sequence.

- Core mathematics -
**Reiny**, Saturday, November 26, 2011 at 9:44am
4th term is 37 ---> a + 3d = 37

6th term is 12 more than 4th term ---> a+5d = a+3d + 12

2d = 12

d = 6

then in a+3d = 37

a + 18 = 37

a = 19

first term is 19

7th term = a+6d = 127

check:

19 25 31 37 43 49

is 4th term 37 ? yes

is 6th term 12 more than 4th? yes

- Core mathematics -
**angel**, Saturday, November 26, 2011 at 9:44am
1 = 6.16 and 7= 43.12

- Core mathematics -
**angel**, Saturday, November 26, 2011 at 9:45am
i think

- Core mathematics -
**angel**, Saturday, November 26, 2011 at 9:47am
Reiny can u answer my other question please it is the latest one about the charity swim

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