The 43rd of an AP is 26 find the first term of progression given that the common difference is 1/2

Answer 1

well, you have

a+42(1/2) = 26
a+21 = 26
a = 5

Answer 2

the sun infinity of a geometric progression(g.p) if first term of series is12

Answer 3

How did you get 21

Answer 4

ARITHMETIC

Answer 5

the 43 ap of 26 find the first term with common different of halp

Answer 6

A +42(1/2)=26
A +21=26
A=26-21
A=5

Answer 7

A=5

Answer 8

Tn=a+(n-1)d=26
T43=a+(43-1)1/2=26
a+(42)×1/2=26
a+21=26
a=26-21
=5