Question

For an a.P. The first term is 25 and the 20th term is 500. Find the coomon difference

Answer 1

Answer:

hey mate here's ur ans.

solutions

as given

the first term of A.P.(a) = 25 _________ equation 1

and

the 20 term of A.P = 500

=> (a+19d)=500 __________ 2 equation

now

putting the value of a in equation 2 from equation 1.

=>25+19d=500

=>19d= 500-25

=>d= 475/19

=>d= 25 ans.

Answer 2

Given That :-
a = 25                     (i)
a + 19d = 500                  (ii)


Subtracting (i) from (ii)

a + 19d - a = 500 - 25

19d  =  475

d = 25