Các câu hỏi tương tự
A,B,C,D,A+C,B+C,A+D,B+D represent 8 diffirent natural numbers from 1 to 8. If A is the largest number in the number from 1 to 8.Find A
How many natural numbers are there between 100 and 999 that unit-digit and tens-digit equal hundreds-digit ?
the number 42 has the property that it is divisible by the digit in the ones place, because 42 divisible by 2. how many number between 20 and 40 have this property?
answer: ... numbers
Use all the digits below to form the decimal number that is smaller than 5:2,5,9,4,8.How many such numbers are there?
Question 6:
Use all the digits below to form the decimal number that is smaller than 1
How many such numbers are there?
Answer: numbers.
how many integer numbers between 200 and 300 are there for which the hundreds digit equals the sum of the other two digits ?
how many integer numbers between 200 and 300 are there for which the hundreds digit equals the sum of the other two digits ?
How many natural numbers between 1000 and 4000 are there for which the thousands digit equals the sum of the other three digits?
Use all the digits below to form the decimal number that is smaller than 5
2,5,9,4,8
How many such numbers are there?
Use all the digits below to form the decimal number that is smaller than 5.
2; 5; 9; 4; 8
How many such numbers are there?