Question 1
Which of these can be divided by 3 with nothing left over? 469 / 405 / 415 / 425
Which of these can be divided by 3 with nothing left over? 469 / 405 / 415 / 425
Which of these can be divided by 3 with nothing left over? 136 / 190 / 180 / 188
Which of these can be divided by 3 with nothing left over? 389 / 328 / 318 / 395
Five questions on this topic, marked at the end. No hints and no answers along the way — that is what makes the result mean something.
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