Number

What is the HCF (Highest Common Factor) of 36 and 48?

Which of the following is an irrational number?

Express 0.00036 in scientific notation.

If \( \frac{a}{b} = \frac{3}{4} \) and \( \frac{b}{c} = \frac{5}{6} \), find \( \frac{a}{c} \).

Find the least number which when divided by 12, 15 and 20 leaves a remainder 7 in each case.

Which of the following numbers is a perfect square?

Find the cube root of 2744.

If \( x = 0.\overline{36} \) (i.e., 0.363636...), express \( x \) as a fraction in simplest form.

The sum of two numbers is 45 and their HCF is 9. Which of the following can be the product of the two numbers?

Find the remainder when \( 7^{100} \) is divided by 5.