Direction: The line chart given below shows number of labourers (men and women) working in six different years. Study the data carefully and answer the following questions. 

The number of Men working in 2017 is 15% more than that of 2015 while the number of Women working in 2017 is 40% less than that of 2014. Find the total number of labourers (Men + Women) working in 2017. 

What should come in place of the question mark '?' in the following number series?

7, 13, ?, 49, 97, 193

A wateh dealer pays 10% customs duty on a watch which costs Rs. 500 abroad. He de- sires to make a profit of 20% after giving a discount of 25% to the buyer. The marked price should be

Directions : Read the graph and answer the following questions.

Percentage increase in profit in 1986 over 1982 is

A dealer buys a car listed at 200000 at successive discounts of 5% and 10%. If he sells the car for 179550, then his profit is

△ABC ∼ △DEF. If the areas of △ABC and △DEF are 100 cm² and 81 cm², respectively and the altitude of △DEF is 6.3 cm, then the corresponding altitude of △ABC is:

In ∆ABC, ∠A=90⁰ , AD is the bisector of ∠A meeting BC at D, and DE ⊥ AC at E. if AB = 10 cm and AC = 15 cm, then the length of DE, in cm, is:

Find the radius of the circle x²+y²-4x+6y=12