The number 5769116 is divisible by which of the following numbers?

If 3x + 7y=75, 5x- 5y= 25, then the value of (x +y)=?

A boat travels 24 km upstream in 6 hours and 20 km downstream in 4 hours. Then the speed of boat in still water and the speed of current are respectively. 

Directions : What will come in the place of the question mark (?) in the following number series?

2  4  11  37  ? 

Out of total capital required to start a business A invested 30 %, B invested $$2\over 5$$ and C invested the remaining capital. At the end of one-year sum of Rs. 4000 is earned as a profit which is 20% of the capital given by B, then find how much C invested in the business? 

A trader marked his goods at 20 % above the cost price. He sold half the stock at the marked price. one quarter at a discount of 20 % on the marked price and the rest at a discount of 40 % on the marked price. His total gain is 

The marked price of a Robot is ₹ 18000. By selling it at a discount of 20%, the loss is 4%. Find the cost price of the Robot.

$$ sin^2 5° + sin^2 10°+sin^2 15°+.....sin^2 85°+sin^2 90°$$ is equal to