Question

In an A.P. the 2nd and 4th term are in the ratio 2:4
and 12 th term is 48. Find 'd'
​

Answer 1

Answer:

d=4

Step-by-step explanation:

HOPE THIS BRING A SMILE IN YOUR FACE

Answer 2

Answer:

4

Step-by-step explanation:

a2/a4 = 2/4

a2 = a+d  (where a is the first term of an A.P and d is the common difference);

a4 = a+3d;

a+d/a+3d = 1/2 (given);

on cross multiplying and solving the linear eqn we get

a = d;

a12 = 48; (Given)

a+11d = 48

on substituting a = d we get;

12 d = 48; d=4 hence a =4;