Make the greatest and the smallest 4-digit numbers by using the digits 4,7,5 and repeating any on digit twice.- 6th class
The given digits written in descending order are 7,5,4.
To obtain the greatest 4-digit number,we write the smallest digit 4 in the once place,the next greater digit 5 in the tens place and the next greater digit 5 in the tens place and the next greater digit 7 in the hundreds place.
then,we repeat the greatest digit 7 and place it in the thousands place.
.: The greatest 4-digit number is 7754.
The given digits written in ascending order are 457.
To obtain the smallest 4-digit number,we write the greatest digit 7 in once place,the next smaller digit 5 in the tense place,and the next smaller digit 4 in the hundreds place.Then,we repeat the smallest digit 4 and place it in the thousands place.
.: The smallest 4-digit number is 4457
The given digits written in descending order are 7,5,4.
To obtain the greatest 4-digit number,we write the smallest digit 4 in the once place,the next greater digit 5 in the tens place and the next greater digit 5 in the tens place and the next greater digit 7 in the hundreds place.
then,we repeat the greatest digit 7 and place it in the thousands place.
.: The greatest 4-digit number is 7754.
The given digits written in ascending order are 457.
To obtain the smallest 4-digit number,we write the greatest digit 7 in once place,the next smaller digit 5 in the tense place,and the next smaller digit 4 in the hundreds place.Then,we repeat the smallest digit 4 and place it in the thousands place.
.: The smallest 4-digit number is 4457
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