RPH Editorial Board Solutions for Exercise 1: MULTIPLE CHOICE QUESTIONS

The least number of five digits which is exactly divisible by 12, 15 and 18 is:

The least number which when divided by 8, 9, 12. 16 and 20 leaves the same remainder 1 in each case is:

The value of $0.8693+0.092+0.87+0.4$ equals:

The number of prime numbers between 1 and 50 is:

If $\frac{a}{b}=\frac{4}{3}$, then $\frac{3a + 2b}{3a - 2b}$ equals,

If $\sqrt{3^n}=81$ then $n$ equals:

If $\sqrt{\frac{x}{196}}=\frac{72}{56}$, then $x$ equals,

If $\frac{80}{x}=\frac{x}{20}$, then the value of $x$ is: