T5 + T24 = 50
a+4d + a+23d = 50
a + a+4d+23d = 50
a + a+27d = 50
T1 + T28 = 50
The sum of 5th term and 24th term is 50
Find the sum of first term and 28th term.
Also find sum of 28th term of this sequence?
4 answers
I assume you are dealing with an AS
a+4d + a+23d = 50
2a + 27d = 50
sum of first and 28th
= a + a+27d
= 2a + 27d
= 50
28th term = a + 27d
= 50 - a
a+4d + a+23d = 50
2a + 27d = 50
sum of first and 28th
= a + a+27d
= 2a + 27d
= 50
28th term = a + 27d
= 50 - a
the first term of a.p is 50 and the fifth term is 25 .find the sum of the first 10th term
ade mistakenly approximate 0.005642 to 2s.f instead of 2d.p. what the percentage error correct to 2 d.p
1 answer