"The `4t h` term of an   A.P. is three times the first and the `7t h` term   exceeds twice
Channel: Doubtnut
Date: 2020-06-28

"The `4t h`
 term of an
 
  A.P. is three times the first and the `7t h`
 term
 
  exceeds twice the third term by 1. Find the first term and the common
 
  difference."