first question: multiply 2 numbers whose every digit is stored in linked lists and return the resultant number as a linked list. 2nd question: It was a range-based query related (not directly to the point of range based). It was related to a modified version of the game Tetris, where the block are rectangular and also upon reaching down they will be rearranged so that there will not be discontinuities in any vertical arrangement. I was asked to maintain the dynamic count of the total number of boxes, and the maximum height of the columns.