Question

Q.5
If ( m+ 2) term of an A.P. is (m+2)^2 - m^2, then its
common difference is-
(A) 4
(B) - 4
(C)2
(D)-2
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Answer 1

Answer:

c is correct answers

Step-by-step explanation:

soo min here

Answer 2

Step-by-step explanation:

A(m+2) = (m+2)^2 -m^2

now, m= 1

A3 = 3^2 - 1^2

= 9 - 1

= 8

m= 2 ,

A4 = 4^2 - 2^2

= 16 - 4

= 12

common difference,d = A4 - A3

d = 12 - 8

d = 4