Callinda has data in column A and column B. She needs to add more data that should appear between the data in column A and column B. She should . click anywhere in column B and use the Insert Column command

click in column A and paste a column

click anywhere in column A and use the Insert Column command

highlight a cell in column A; place your cursor on the border of the cell so it turns into a two-sided arrow, and drag

Wich technology can a website use to allow you to listen to a concert live over the internet?

Write a method named addall that could be placed inside the hashintset class. this method accepts another hashintset as a parameter and adds all elements from that set into the current set, if they are not already present. for example, if a set s1 contains [1, 2, 3] and another set s2 contains [1, 7, 3, 9], the call of s1.addall(s2); would change s1 to store [1, 2, 3, 7, 9] in some order. you are allowed to call methods on your set and/or the other set. do not modify the set passed in. this method should run in o(n) time where n is the number of elements in the parameter set passed in.

Worth 50 points answer them bc i am not sure if i am wrong