Question

Solve this........ it's a challenge for all(35 points)

6. Which of the following is the common difference of
an A.P, whose nth term is (5n + 2)?
(1) 4
(2) 5
(3) 3
(4) 2

Answer 1

Step-by-step explanation:

first term is 5+2=7

second term is 5×2+2 =12

difference is 5

option 2

Answer 2

Answer:

5

Step-by-step explanation:

Un = (5n + 2) = 2 + 5n =  2 +( 5n-5) +5 = 7 + 5(n-1)

common difference = 5