![image](https://assets.leetcode.com/users/images/5241d6ba-f075-4cf9-a700-93722821295f_1623615776.800874.jpeg)\n![image](https://assets.leetcode.com/users/images/7302c480-6541-4d67-a221-11e0ac72654f_1623615776.8118212.jpeg)\n![image](https://assets.leetcode.com/users/images/12b2b359-bb29-48db-b754-fef36dd73de7_1623615776.9471974.jpeg)\n\n\nAny insights on these questions and also please do suggest that what a person should have knowledge about to do such questiions, I was simply thinking that its about thinking in mathematical terms

\n\n\n\n\nAny insights on these questions and also please do suggest that what a person should have knowledge about to do such questiions, I was simply thinking