Phone number
A phone number with nine digits, none of which are repeated. The middle number in the second three-digit number is 3 times greater than the 6th and twice greater than the 7th. The three-digit number in the middle 3 numbers is 2 times greater than the last three numbers. The second digit is the sum of the 1st and 3rd, and the 1st is less than the third.
What is the phone number?
What is the phone number?
Correct answer:
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Do you have a linear equation or system of equations and are looking for its solution? Or do you have a quadratic equation?
Would you like to compute the count of combinations?
You need to know the following knowledge to solve this word math problem:
combinatoricsalgebrabasic functionsGrade of the word problem
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