Another formula for n th term of an A.P. (except tn= a+(n-1)d
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l-(n-1)d from last.....
Kmg13teen:
what is l ?
last term
okay
mark it as brainlist
No man, your formula is for first term I want the formula when sum of n terms is given
n/2(2a+(n-1)d is for sum you asked for n term
No man,I know that formula, But the Sum of n terms is given as 350 and we have to find the value of n
and t n
anything else is given?
the answer is Sn -Sn-1
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