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प्रश्न
Which of the following will have 4 at the units place?
विकल्प
142
622
272
352
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उत्तर
622
Explanation:
The unit place of the square of 14 = 42 = 16 = 6
The unit place of the square of 62 = 22 = 4 ...[∵ 22 = 4]
The unit place of the square of 27 = 72 = 49 = 9
The unit place of the square of 35 = 52 = 25 = 5
Clearly, 622 has 4 at the unit’s place.
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