If we decrease the ten thousands digit of the number 52,398 by 5, we change the digit 5 to 0. This results in the new number 02,398, which is essentially 2,398. Thus, the new number formed is 2,398.
1339
86,420
36
The number is 36.
Decrease.
1339
10864
If the digits go from the thousands place to the ones place then we need to use 4 digits. Because the digits are all even, we are forced to use the 4 even digits (2, 4, 6 and 8). As they decrease by 2 each time, the only option for ordering them is greatest to lowest. Therefore, the number described in the question is 8,642.
86,420
Including the leading zero, the smallest number you can make from the digits 03418 is 01348. Without the leading zero in the ten thousands column, the smallest number you can form from the digits 03418 is 10348.
36
03458
The number is 36.
200,000. Since the number 200 is in the hundreds, it will be 3 digits long. A number in the thousands has at least 4 digits, and up to 6. The number one thousand is written like this: 1,000. Putting the number 1 in the thousands requires adding 3 zeros to the end of it, so writing the number 200 in the thousands would require the same strategy. Therefore, you'd get to your answer: 200,000.
Decrease.
3457 is the smallest odd number formed.
The first number greater than 106637 where the thousands and units digits are the same is 106640. In this number, the thousands digit is 6 and the units digit is also 0, satisfying the condition. The next possible candidates would be 106641, 106642, and so on, but they do not meet the requirement of having matching thousands and units digits. Thus, 106640 is the answer.