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Aptitude
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Verbal Reasoning
Computer Science
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107 x 107 + 93 x 93 =?
19578
19418
20098
21908
None of these
Show Answer
Correct Answer:
20098
Explanation:
107 x 107 + 93 x 93
= (107)
2
+ (93)
2
= (100 + 7)
2
+ (100 - 7)
2
= 2 x [(100)
2
+ 7
2
] [
Ref:
(a + b)
2
+ (a - b)
2
= 2(a
2
+ b
2
)
]
= 20098
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