Loren is putting brick along both edges of the 21-meter walkway to his house. each brick is 0.26 meters long. loren is placing the bricks end to end. how many bricks does he need? plz show your work, i need this done by 6: 30

Suppose you are choosing a 6-digit personal access code. this code is made up of 4 digits chosen from 1 to 9, followed by 2 letters chosen from a to z. any of these digits or letters can be repeated. find the total number of personal access codes that can be formed. 492,804 341,172 39,917,124 4,435,236