Math

A number rounds off 4000 the digit in the hundred places is twice the digit in the tens place. The sum of the digit is 12 . the number uses only two different digits .find the number

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1. I assume you are rounding to the nearest thousand

since it rounds to 4000, the hundreds digit could only be 0,1,2,3, or 4 if the number starts with a 4
or
only 5,6,7,8,9 if it starts with a 3
but the hundreds digit is twice the tens, so the hundreds digit must be even

so cases:
363X , sum of digits so far is 12 , so # is 3630
384X , sum of digits so far is 15 , not possible
421X , sum of digits so far is 7 , so # is 4215
442X, sum of digits so far is 10 , so # is 4422

so it could be 3630, 4215, or 4422

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2. rounded number

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3. 4422

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4. A number rounds off 4000 the digit in the hundred places is twice the digit in the tens place. The sum of the digit is 12 . the number uses only two different digits .find the number

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5. What number whose sum of its digits is 26, becomes 6000, when rounded to the nearest thousand? list 3 possible asnswer

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6. 6+11+9=26
6+12+8=26
6+13+7= 26

6119, 6128 & 6137 are all rounded in the nearest thousand to 6000

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