Lessons

General Aptitude
9.1 Numbers - General Questions

135 / 139

Q.

1397 x 1397 = ?

View Answer

Correct choice: A

Explanation:

1397 x 1397 = (1397)2
  = (1400 - 3)2
  = (1400)2 + (3)2 - (2 x 1400 x 3)
  = 1960000 + 9 - 8400
  = 1960009 - 8400
  = 1951609.
135 / 139