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Q: What are all the squared numbers to 15 squared?

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When you square a number, the final digit is the final digit of the 'one's' number squared. Since the only single digit numbers squared which ends in 6 are 4 and 6, the answer is either 4 or 6 (a calculator tells me it is 6) 0 squared is 0. All numbers ending in 0 when squared will end in 0. 1 squared is 1. All numbers ending in 1 when squared will also end in 1. 2 squared is 4. All numbers ending in 2 when squared will end in 4. 3 squared is 9. All numbers ending in 3 when squared will end in 9. 4 squared is 16. All numbers ending in 4 when squared will end in 6. 5 squared is 25. All numbers ending in 5 when squared will end in 5. 6 squared is 36. All numbers ending in 6 when squared will end in 6. 7 squared is 49. All numbers ending in 7 when squared will end in 9. 8 squared is 64. All numbers ending in 8 when squared will end in 4. 9 squared is 81. All numbers ending in 9 when squared will end in 1. So square numbers can only end with 0, 1, 4, 5, 6 or 9.

225 (15 squared)256 (16 squared)289 (17 squared)324 (18 squared)

There are an infinity of numbers and each one has its square...

It is impossible to list all squared prime numbers as there is an infinite number of squared prime numbers starting with 4, 9, 25, 49, 121, 169, 289, 361, 529, 841,...

Yes. Except for square of 1.

Yes.

(-1)2=1 all squared numbers turn out positive and 12=1 (-1)2=1 all squared numbers turn out positive and 12=1

the answer to 15 squared is 225

-15 squared is equal to -15 x -15. Since multiplying two negative numbers together gives a positive number, this is the same as multiplying together 15 and 15.Therefore, -15 x -15, or -152 = 152 = 225.

+ 2.7 and - 2.7

3.82 =14.44 so the numbers are 14 and 15

0.01 and 100 are the only ten squared numbers.

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