All atoms of an element have the same number of protons. The number of protons in an element is a primary identifier known as its atomic number. The number of electrons is the same as the number of protons.
Deepu started his journey from A and moves 2 km towards South, then he turns right and moves 1⁄2 kilometre. Again he takes a right turn and walks 2km. Now he takes a left turn and walks 3 km more. How far he is from the starting point?
Rohit wants to earn 21% profit on a belt after offering 45% discount. By how much percentage more should he mark the price of his article above the costprice?
Abhishek is Byomkesh's brother and Vimal is Jackie's father. Ella is Byomkesh's mother. Abhishek and Jackie are brothers. How is Ella related to Vimal?