The number of different codes does this lock provides is 360.
Given that,
- There is the combination lock having push buttons from A to F (6 buttons)
- Out of this, four should be in any order.
- Also, the push button should not be used more than once.
Based on the above information, here we use permutation which is as follows:

= 360
Therefore we can conclude that the number of different codes does this lock provides is 360.
Learn more: brainly.com/question/23283166
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The answer is 29.
All angles in a triangle add up to 180. If its a right triangle, you know one of the angles is 90, and it gives you that one of the angles is 61. All you have to do is subtract to find what the last angle is.
180 - 90 - 61 = 29