18 is the only number that matches these criteria.
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The units digit of a two digit number exceeds twice the tens digit by 1. Find the number if the sum of its digits is 10.
2.3
9218 9425
I am a 3 digit number divisible by 7 but not 2 the sum of my digits is 4 what number am I
The number is 84.Assign the digits in the number the letters a and b.GIVEN: a + b = 12GIVEN: a = 2bSolve for b, then solve for a.2b + b = 123b = 12b = 4a = 2(4) = 8