math
posted by Javier .
The number is a twodigit number.
The number is an even number less than 50.
The sum of the digits in the ones and tens places is the double of 5.
The tens place digit is less than the ones place digit
What is the number?

if the digits are a and b,
ab < 50
a+b=10
a is 1,2,3,4
so, b is 9,8,7,6
but the number is even, so b = 8 or 6
so, we are left with 28 or 46
Not enough conditions to pick which.
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