# Thread: PLZ Help with 3 Test Questions

1. ## PLZ Help with 3 Test Questions

1. For any real numbers x, let $x be defined as the greatest integer less than or equal to x. What is$ -1.5 + $4.5 ? 2. For any integers n, let ® n be defined as the sum of the distinct prime factors of n. For instance, ® 36=5, because 2 and 3 are the only prime factors of 36 and 2+3=5. What is the smallest value of w for which ® w=12 ? 3. For all real numbers a and b, let the expression a b be defined by the equation a b= 10a + b. If 2.5 y = 50, what is the value of x? Thank you very much 2. Hi, and welcome to the forum. I like your notations Forum rules ask you to make some effort (see rule #11). This may be a partial solution or at least a description of what exactly your difficulty is. For example, you should be able to find the greatest integer less than or equal to 4.5 from the first problem. 3. Originally Posted by Kareemf74 PLEASE HELP! would be much appreciated : ) 1. For any real numbers x, let$ x be defined as the greatest integer less than or equal to x.
What is $-1.5 +$ 4.5 ?

2. For any integers n, let ® n be defined as the sum of the distinct prime factors of n. For instance, ® 36=5, because 2 and 3 are the only prime factors of 36 and
2+3=5.
What is the smallest value of w for which ® w=12 ?

3. For all real numbers a and b, let the expression a b be defined by the equation a b= 10a + b.
If 2.5 y = 50, what is the value of x?
Test questions? see rule #6 ...

http://www.mathhelpforum.com/math-he...ng-151418.html