Questions

The paste applied to the side of a match box is a mixture of phosphorus trisulphide, glass powder (or sand) to cause friction and glue (binding material)

Sum of all numbers in each row and columns must be 15.

In last row to gt sum as 15 missing number must replaced by 1. 

Euclid of Alexandria was a Greek mathematician, often referred to as the Father of Geometry.

Ethernet uses Bus topology.

The Indian Slavery Act, also called as Act 5th of 1843, was an act passed in British India under East India Company rule, which outlawed many economic transactions associated with slavery.

Key elements in the procurement management plan are enumerated in this PMBOK section. [12.1.3.1]

The default return value from a function is int. In other words, unless explicitly specified the default return value by compiler would be integer value from function.