** Answers – 100 Doors 2013 Level 71-80**

**Solution: 100 Doors 2013 Level 71**

1. Insert the numbers above the door into the “?” to complete each pattern. Then add up each column (clue from the “+” signs)

The first column numbers can all be divided by 4.

The second column numbers can all be divided by 3.

The third column numbers can be divided by 1 and itself.

4, 12, 24, 36, 48, 52 = 176

9, 27, 33, 69, 6, 39 = 183

1, 11, 13, 5, 7, 17 = 54

Put in the code: 17618354

**Solution: 100 Doors 2013 Level 72**

Take the crowbar and use it on the white box. Then pick up the screwdriver and use it too on the box. Take the keycard and use it on the keypad in the top left corner.

**Solution: 100 Doors 2013 Level 73**

First you need to fill in the blank marked with ?. Here are the numbers going clockwise: 1,3,5,7 / 9,12,15,18 / 2,4,6,8 / 22,33,44,55. After that you need to calculate the numbers above the door. To have 30 you need to do 5*6 so rotate the green arrow to point at the two ? which are 5 and 6 then press calculate. For 31 it’s 22+9 so move the red arrow to point the 22 and 9 and press calculate. Now for 55 move the red arrow to point to ?(33) and 12 and press calculate. Finally for 660 move the green arrow to 44 and ?(15) and press calculate.

**Solution: 100 Doors 2013 Level 74**

1. Press the white arrow on the left and right to move the door handle.

Press the arrows in this order exactly: Right 3 times, Left 7 times, Right 6 times, Left 9 times, Right 12 times, Left 6 times.

**Solution: 100 Doors 2013 Level 75**

1. Look carefully at the door. The 1’s make 4 numbers on the door -> Enter the code: 1275

**Solution: 100 Doors 2013 Level 76**

1. Calculate the years lived for each person. (month doesn’t matter)

Top left: 84, Top right: 54

Bottom left: 87, Bottom right: 76

Add the top two: 84+54 = 138

Subtract the bottom two: 87-76 = 11

Multiply the two numbers: 138×11 = 1518

Enter the code: 1518

**Solution: 100 Doors 2013 Level 77**

1. Move the pot away all the way to the left -> Press the button on the right 4 times.

**Solution: 100 Doors 2013 Level 78**

As usual the clue is above the door. You need to execute the combination on the same order. First press the top left and bottom left at the same time/ Right / Bottom left /Right / Top left / Right / Bottom Left / Right / Bottom left and top left at the same time.

**Solution: 100 Doors 2013 Level 79**

1. Press each of the silver blocks to see how many times it takes to go back to the start position.

1st: 5

2nd: 7

3rd: 9

4th: 11

Enter the code: 57911

**Solution: 100 Doors 2013 Level 80**

1.Pull the left side of the door left with one finger, and holding it pull the white bar on the left all the way down.

2. Pull the right side of the door left with one finger, and holding it pull the white bar on the right all the way down.

Go to answer Level 81-90