List of top Higher Mathematics Questions on Real Numbers

Which of the following is an irrational number? (A) $2.3$, (B) $\sqrt{13} \times \sqrt{13}$, (C) $\sqrt{441}$

Find the HCF of $m$ and $n$ if both are prime numbers.

Find the HCF of 36, 54, and 90 using the prime factorization method.

If $540 = 2^x \times 3^y \times 5^z$, find the value of $x + y - z$.