On which island of France, Napoleon was born

What value will come in place of question mark (?) in the questions given below?

663.48 + 22.51 - 292.63 = ? + 300.44 

A rectangular grass plot 80 m × 60 m has two roads, each 10 m wide, running in the middle of it; one parallel to length and the other parallel to breadth. Find the cost of gravelling the roads at ₹ 2 per m². 

A square transparent sheet with a pattern is given. Figure out from amongst the four alternatives as to how the pattern would appear when the transparent sheet is folded at the dotted line.

Direction: Study the following graph carefully and answer the following questions.

What is the difference between average demand and average production of the five companies taken together?

Which is the oldest natural lake of Rajasthan?

Who will take charge as the chairman of JP Morgan, South and Southeast Asia after Kalpana Morparia retirement in 2021?

Recently, who has won the title of EY World Entrepreneur of the Year 2020?