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

55 109 ? 433 865 1729 

The 3rd and 8th term of an arithmetic  progression are 19 and 49 respectively. What is the 13th term?

The formula is a square of 35 with the multiple method.

Suresh is half his father’s age. After 20 years, his father’s age will be one and a half times Suresh’s age. What is his father’s age now?

Shankar took a loan of Rs. 25,000 for purchasing a machine. How much amount will he repay after 1 year 6 months at annual rate of 12%, when interest is accumulated annually? 

What is the reflection of the point (5,-2) in the line y=-1?

A tank of 30 meter long, 20metre wide and 12 meter deep is dug in a rectangular field of length 588 meter and breadth 50 meter. The earth sand so dug out is spread evenly on the remaining part of the field. The height of the field raised by it is

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

19 38 ? 228 684 1368