Hello,
Your question is incorrect or has a mistake. You have stated that P,Q,R,S,T are positive integers. If you multiply them with any number it will be still a integer. The question might be something else. Please check it again.
You can ask to your maths teacher and he/she will let you know where the mistake it. It is basic concept that what ever be the number you multiply with an integer it may be negative or positive , the result will always will be a integer.
Hope it helps!
Question : Directions: Select the option that represents the letters that, when placed from left to right in the blanks below, will complete the letter series. P _ R R _ P Q _ _ S _ Q R _ S P _ R R S
Question : Let $p, q, r$ and $s$ be positive natural numbers having three exact factors including 1 and the number itself. If $q>p$ and both are two-digit numbers, and $r>s$ and both are one-digit numbers, then the value of the expression $\frac{p-q-1}{r-s}$ is:
Question : Directions: If R ÷ S means that R is the mother of S, R × S means that R is the father of S and R – S means that R is the sister of S, then which of the following expressions shows that P is the father of R?
Question : Directions: If S – T means that S is the mother of T, S × T means that S is the father of T, and S + T means that S is the sister of T, then which of the following expressions shows that P is the mother of R?
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