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How many pairs of two - digit natural numbers have a difference equal to 40?
How many pairs of two - digit natural numbers have a difference equal to 40? up>?
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 ?
choose any three digit from 1 to 9 to from a 3 - digit number and each digit is chosen only once how many of these have the sum of all digit equal to 13
choose any three digit from 1 to 9 to from a 3 - digit number and each digit is chosen only once how many of these have the sum of all digit equal to 13
How mant fractions equal 1/5 and have denominators of 2-digit numbers
choose any three digits from 1 to 9 to form a 3 - digit number and each digits is chosen only once. how many of these have the sum of all digit equal to 13
How many three-digit numbers are exactly 19 more than a two-digit number?
Answer: ............. numbers.
How many three-digit numbers are exactly 19 more than a two-digit number