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

19 38 ? 228 684 1368 

The smallest number of five digits exactly divisible by 476

In a college Anjana scored 80 marks out of 150 in History and 95 marks out of 120 in English. If she wants to score 70% marks in 3 subjects, find the minimum marks she should score in Geography out of 100.

What will be the value of x³+y³+z³-3xyz when x+y+z=9 and x²+y²+z²=31?

Divided ₹ 1250 among A, B, C so that A gets   $$ {2\over9}$$ of B’s share and C gets   $${3\over4}$$ of A’s share,

Three bottles of equal capacity are containing a mixture of milk and water in ratio 1: 3, 3: 5 and 11: 5 respectively. These three bottles are emptied into a large bottle. What is the ratio of milk and water respectively in this large bottle?

Rs.4000 becomes Rs. 5000 in 4 years at a certain rate of compound interest. What will be the sum at the end of 12 years?