Correct Answer : D
The infinite sum 1?+4 / 7+?9 / 72+?16 / 73 ? 25 / 74 ? .... equals
In a number system the product of 44 and 11 is 2124. The number 3111 of this system, when converted to the decimal number system,
The figure below shows the network connecting cities, A, B, C, D, E and F. The arrows indicate permissible direction of travel. What is the number of distinct paths from A to F?