Identify the number marked as (?) in the numerical series below: 5,3, 2, 6, 7, 9, 1,15, 4, 2, 3, 3, 9,5, 1, (?)

The hawaiian alphabet has 12 letters. how many permutations are posible for each number of letters?

The square root of 9x plus 7 plus the square rot of 2x equall to 7

Miss henderson wants to build a fence around a rectangular garden in her backyard in the scale drawing the perimeter of the garden is 14 in of the actual length of a b is 20 ft how many feet of fencing what you need