Armed Forces Police Math Exams Quizzes MCQs Quizzes Whole Numbers

Question:
1397 x 1397 =?

Option A):
1951609
Option B):
2031719
Option C):
18362619
Option D):
1981709

Correct Answer is Option A):
1951609

Explanation:
Solution:
1397 x 1397   =(1397)2
= (1400 - 3)2
= (1400)2 + (3)2 - (2 x 1400 x 3)
= 1960000 + 9 - 8400
= 1960009 - 8400
= 1951609