Question

John forgets the secret code required to open his locker. All he remembers is that the code has three digits: 3,7 and 1. How many combinations of numbers must he test to ensure that the locker opens... Please answer as fast as possible...Whoever gives answer first(best too)...I will mark him/her as brainliest...:) (I am also giving 20 points)

Answer 1

Answer:

6 secret codes

137

317

731

371

713

173

Answer 2

The combination of numbers that can be made is six.

Given:

First digit = 1

Second digit = 3

Third digit = 7

To Find:

Number of possible combinations to open the bag.

Solution:

Building combinations with the given numbers -

First digit = 1

137, 173

Total combinations = 2

Second digit = 3

317, 372

Total combinations = 2

Third digit = 7

713, 731

Total combinations = 2

Now, adding the combinations made by all digits -

= 2 + 2 + 2

= 6

Answer: The combination of numbers that can be made is six.

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