Q: Which of these are even numbers 343 211 210 515 550 625?

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If repetition is allowed . . . . . 343 If repetition is not allowed . . . . . 210

If they can be repeated, 343 different numbers. If they can be used once each, there are only 210.

1 and 343 are two numbers that do.

They are 7 times 49 = 343

1, 7, 49, 343.

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If repetition is allowed . . . . . 343 If repetition is not allowed . . . . . 210

If they can be repeated, 343 different numbers. If they can be used once each, there are only 210.

1 and 343 are two numbers that do.

343 is divisible by 1, 7, 49, 343.

1, 7, 49, 343.

They are 7 times 49 = 343

343=7x7x7=73. 343 is a perfect cube. 7 is the prime factor of 343. 1,7, 49 and 343 are the distinct prime factors of 343.

343=7x7x7=73. 343 is a perfect cube. 7 is the prime factor of 343. 1,7, 49 and 343 are the distinct prime factors of 343.

They are: 1*7*49 - 343

7 x 7 x 7 = 343

343 = 73, 2401 = 74, so 7, 49 and 343 divide into both numbers.

343 = 7^3