Math

posted by .

A number has four digits. the sum of the first and last digits is twice the second digit. The second digit is 2 less than the third digit. The last digit is twice the first. Some of the digits are alike. what is the number??

  • Math -

    This is a hard one. What helps me is to read each part of the problem carefully. Write the numbers you think on a piece of paper. When you find out if it is wrong put an x next to it. This will narrow down the process.

  • Math -

    i got the equations from my sister
    a+d= 2b
    b= c-2
    d=2a

    but what do i do next?

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Math

    i am a four digit number. all of my digits are different. my first digit is twice my fourth digit. my second digit is twice my first digit.my last digit is twice my third digit. the sum of my digits is 15. what number am i?
  2. math

    Find the four-digit number described by these three clues. 1) The first digit is one-third of the third digit. 2) The fourth digit is twice the second digit. 3) The first and third digits add up to twice the sum of the second and fourth …
  3. Math

    A number has 4 digits. The sum of the first and last digit is twice the second digit. The second digit is 2 less than the third digit. The last digit is twice the first digit. Some of the digits are alike. What is the number?
  4. math

    Find a six-digit even number containing no zeros and no repeating digits in which the first digit is four more than the second digit, the third digit is one less than the sixth digit, and the fourth and fifth digits when read as a …
  5. math

    find the mystery number, it is a 4 digit odd number, all the digits are different, none of the digits are 0-9, the tens digit is twice the ones digit, and the hundreds digit is twice th tens digit. the thousands digit is one less than …
  6. 4th grade math

    Find the mystery number. It is a 4 digit odd number. All the digits are different. None of the digits are 0 or 9. The tens digit is twice the ones digit, and the hundreds digit is twice the tens digit. The thousands digit is one less …
  7. Math

    Solve the mathematical puzzle. Determine the digits of R from these clues. The first digit is the answer when the third digit is divided by 2. The second and third digits add to 7. The second digit minus the first digit is 1. R is …
  8. math

    this code has five digit 1,2,3,4,5. the first digit plus the second digit is equal to the third digit the second digit twice times the first digit the second digit is half the fourth digit and the fifth digit is the sum of the first …
  9. math

    it is a 3 digit number all the digits are different the first and second digits are multiple of 3 the first digit is greater than the second digit. the sum of the first two digits is 7 more that the third digit the number is not a …
  10. maths

    what is the four digit number which satisfies these conditions; The last digit is twice the first digit. The second digit is twice the third digit. The sum of the first and last digits is twice the third digit.

More Similar Questions