Work out \( \left(4.2 \times 10^{11}\right)-\left(7 \times 10^{9}\right) \)

The list price of a frock is ₹220. A discount of 20\% is announced on sales. What is the amount of discount on it and its sale price.

What is a composite number?

In article was purchased for ₹1239 including GST of 18\%. Find the price of the article before IST was added?

1. Write the place value of 3 in 359. 2. Give one like fraction of \( \frac{2}{3}, \frac{9}{3} \) 3. The SI unit of length is 4. How many years are there in a century? 5. Full form of CCE is

\( 66 \frac{2}{3} \% \) of 60 kg