Teaching KVS PRT (Latest Pattern) Mock Test Quantitative Aptitude Number System Multiples and Factors
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:
1
–s – 1
2
s – 1
3
1 – s
4
s + 1