Question

the sum of first 7 terms of an ap is 182 if its 4th and 17th term in the ratio 1 is to 5 find the AP​

Answer 1

Answer:

ap is to 1:5 so answer is 234

Answer 2

Given :

a4 = 1

a17 = 5

solution : an = a +( n - 1)d

for n = 17 and 4

5 = a +16d

1 = a + 3d

- - -

4 = 13d

d = 4

13

d = 0.30

》 1= a + 3(0.30)

1 = a + 0.9

a = 1 - 0.9

a = 0.1

A.P. is :- 0.1 , 0.4 , 0.7 , 1.0 , 1.3.............

hence solved...