Question

is anyone can give me the right answer this question please ​

Answer 1

Answer:

your answer is 5 I will explain

Answer 2

Answer:

option (c) : 5

Step-by-step explanation:

let the three terms of an A.P. is '(a - d)' , '(a)' , '(a + d)'

let the common difference  , d = ?

∴ sum of three consecutive terms ,

 (a - d) + (a) + (a + d) = 30

 3a = 30

a = 10

∴ products of first and last term

  (a - d) × (a + d) = 75

(a^2 - d^2) = 75

put the value of 'a'

(10)^2 - (d^2) = 75

-(d)^2 = 75 - 100

d^2 = 25

d = √25 = 5