What will be the unit digit of the squares of the given numbers?
799
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Solution
We know that if a number has its unit’s place digit as a, then its square will end with the unit digit of the multiplication a × a.
799:
Since the given number has its unit’s place digit as 9, its square will end with the unit digit of the multiplication (9 × 9 = 81) i.e., 1
Concept: Properties of Square Numbers
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