If you write down all the numbers from 1 to 99, then how many times do you write 3?

If '+' becomes '-' and '×' becomes '÷', find the value of ((175 + 160) × 50) × 10.

If ‘÷’ means ‘+’; ‘ –‘ means ‘x’; ‘x’ means ‘÷’ and ‘+’ means ‘ –‘; then 111 – 21 ÷ 7 × 2 + 4 – 127=?

Select the group that has the same relation between the given numbers as the relation between the following group numbers.
(4, 9, 37)

What will be the value of 16 +19 × 51 ÷ 153 – 12 changing the symbols given below?
× and ÷

If the ink of one pan ends up writing 10 page, how many panes will be required to write 20 copies of 40 page?

If in a certain way, 3 + 4 = 25 and 7 + 24 = 625, then Find the value of 9 + 40 =?

The average age of three friends A, B, C is 20 years. The average age of A and B is 19 years, then what is the age of C?