Question

in an A.P the 3rd term is 5 and 7th term is 9 then what is the common difference​

Answer 1

Answer:

Common difference will be 1

Step-by-step explanation:

We have given in AP the third term is 5 and 7th term is 9

We know that in AP the nth term is given by

T_n=a+(n-1)d

5=a+(3-1)d

a+2d=5-------eqn 1

And 7th term is 9

So 9=a+(7-1)d

a+6d=9------eqn 2

After solving eqn 1 and eqn 2

d = 1

So common difference will be 1

Answer 2

Answer:

so please help me