Aptitude - Numbers - Discussion
Discussion Forum : Numbers - General Questions (Q.No. 5)
5.
1397 x 1397 = ?
Answer: Option
Explanation:
| 1397 x 1397 | = (1397)2 |
| = (1400 - 3)2 | |
| = (1400)2 + (3)2 - (2 x 1400 x 3) | |
| = 1960000 + 9 - 8400 | |
| = 1960009 - 8400 | |
| = 1951609. |
Discussion:
57 comments Page 5 of 6.
Esai said:
1 decade ago
Explain me about digit sum method.
Deepmars said:
7 years ago
Good explanation, thanks @Pramod.
(2)
Shweta said:
8 years ago
Nice explanations thank you all.
Gore said:
1 decade ago
@Tamil.
Your answer is perfect.
Your answer is perfect.
Rinki said:
10 years ago
Easy explanation. Thank you all.
Baskar said:
10 years ago
Can you explain logic @Prashant.
G.M.L.GENATUS said:
2 decades ago
Just take a nearest whole value.
Sitaram said:
8 years ago
Very easy method, Thanks @Aruna.
Sowmi said:
9 years ago
Nice explanation @Rahul Jadhav.
Rishi said:
7 years ago
Nice explanations. Thanks all.
(4)
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