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digit

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    The ones digit of a two-digit number is three, while the tens digit is four.

    The ones digit of a two-digit number is three, while the tens digit is four. We write this as tens digit ones digit: 43
  2. math_celebrity

    The sum of the digits of a 2 digit number is 10. The value of the number is four more than 15 times

    The sum of the digits of a 2 digit number is 10. The value of the number is four more than 15 times the unit digit. Find the number. Let the digits be (x)(y) where t is the tens digit, and o is the ones digit. We're given: x + y = 10 10x+ y = 15y + 4 Simplifying Equation (2) by subtracting y...
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    The sum of the digits of a certain two-digit number is 16. Reversing its digits increases the number

    The sum of the digits of a certain two-digit number is 16. Reversing its digits increases the number by 18. What is the number? Let x and (16-x) represent the original ten and units digits respectively Reversing its digits increases the number by 18 Set up the relational equation [10x +...
  4. math_celebrity

    Let P(n) and S(n) denote the product and the sum, respectively, of the digits of the integer n. For

    Let P(n) and S(n) denote the product and the sum, respectively, of the digits of the integer n. For example, P(23) = 6 and S(23) = 5. Suppose N is a two-digit number such that N = P(N) + S(N). What could N be? Is there more than one answer? For example, for 23 P(23) = 6 and S(23) = 5, but...
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