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Q: How many four digit palindromes are perfect squares?

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There is 90 four digit palindromes.

There are 90 four-digit palindromes

81

1221, 2112, 3003, 10401, 11211, 12021

The same as the number of two-digit numbers, since the last two digits must the same as the first two, only reversed. So I'll say there are 100 four-digit palindromes.

1024

1024

Colorado and wyoming

The same as the number of two-digit numbers, since the last two digits must the same as the first two, only reversed. So I'll say there are 100 four-digit palindromes.

1600 (square of 40)

Six. 1551 2442 3333 4224 5115 6006

4,624 = 682

madam, rotor, level, kayak

If you realize that a 4 digit palindrome is basically a two digit number followed by it's own reverse, you can re-phrase this question as 'how many two digit numbers are there?' Which would then mean that (if you're considering zeros as digits without a non-zero leading term) there would be a 4 digit palindrome 0000 for the two digit 00; a four digit 0110 for the two digit 01; 0220, 02; etc etc. So the number of four digit palindromes would be the same as the quantity of whole numbers from 00 to 99. So I believe the total answer to your question would be 100.

There is no solid shape with exactly four squares and no other faces.

Digit four represents ones.

Lowest four-digit number: 1000 Highest four-digit number: 9999

For a number to be a perfect square and a perfect cube, it must be a perfect sixth power. Now 36 = 729 is too small and 56 = 15625 is too large, leaving 46 = 4096 as the answer.

It is already a four-digit number.

No. Consider four points at the corners of a perfect square.

16

A four digit whole number can be found from 1000 to 9999

reactivateing my phone without my four digit pin.

no

U turn a square into four squares by making a plus sign