See my answer in other newsgroup

--
Kind regards,

Niek Otten

"sylphide" wrote in message
...
OK Bob, thanks.
It appears thet the OFFSET formula puts me in the right track but I am
still
stuck. This is what i wrote:

=B2*(1-Data!$B$4^lenght)*PRODUCT(OFFSET(Data!$N$4,lenght-1,0,1,1))

where the lenght is equal to n in the Temporary Insurance
B2 is Ax, ie the whole life insurance corresponding to the life age (x)
Data!$B$4 is the discount factor (=1/1+i) and i is the interest rate
$N$4 is the px (probability of life age (x) surviving to next year (which
I
am pretty sure is the data i need to Offset depending on the lenght of n)

However,from your formula "=OFFSET(Data!$P$3,(n-1)*30,0,13,1)" I do not
understand why I must multiply by 30, nor do I understand
the number 13. Thanks again.

"Bob Phillips" wrote:

Take a look at OFFSET, something like

=OFFSET(Data!$P$3,(n-1)*30,0,13,1)


--
HTH

Bob Phillips

(remove nothere from email address if mailing direct)

"sylphide" wrote in message
...
Ok, so what is the Excell function that will solve my problem.
I am calculating a temporary life Insurance ( from Life Table) and need
to
sum the column of a spreadsheet from 0 to n, n being the lenght
(variable)
of
the Temporary Life Insurance.
Any tips?
Ex.:product from p3 to p12 if n=10, p30 to22 if n=20, etc. Thing is i
need
to be able tu put any value of n in the input table and that same n
valu
affect the lenght of the items I need to multiply.
So far I am he
=B2*(1-PUISSANCE(Data!$B$4,lenght)*PRODUCT(Data!N4:@@@))
It is the part after the * that I am not ure how it should be coded.
With IF?
I donno
Thanks