if $$x^4+{16\over x^4}=15617, x>0$$ then find the value of $$x+{2\over x}$$

If the 8-digit number 888x53y4 is divisible by 72, then what is the value of (7x + 2y) for the maximum value of y?

Directions: Read the pie chart carefully and answer the following questions.

Note: No new employees joined the given banks of left the given banks from January 2015 to December 2015.

In December 2014, 4% of the candidates who applied for a job as Scale 1 officer were recruited in Bank A. If Bank A had 44 Scale 1 officers in 2014, what was the number of candidates who applied for the job?

If P = 99, then the value of P(P²+3P+3) is

After seeing a policeman from a distance of 500 m, a thief starts running at a speed of 10 km/h. After noticing, the policeman chases immediately with a speed of 12 km h, and the thief is caught. The distance run by the policeman is:

An item is marked for ₹ 240 for sale. If two successive discounts of 10% and 5% are allowed on the sale price, the selling price of the article will be 

A cylindrical roller made of iron is 1.2 m long. Its internal radius is 24 cm and thickness of the iron sheet used in making the roller is 15 cm. What is the mass (in kg) of the roller, if 1 cm³ of iron has 8 g mass?

If x+y+z=10, x²+y²+z²=30, then the value of x³+y³+z³-3xyz is _________.