If the unit digit of a number is 5, its square will always end with _________
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Step-by-step explanation:
Example: To calculate the square of 57, 25 + 7 = 32 and 72 = 49, which means 572 = 3249. If the number ends in 5, its square will end in 5; similarly for ending in 25, 625, 0625, 90625, ...
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Answer:
Square of 5 is 25
If the unit digit a number is 5 its square will always end with 5
Ans. 5
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