Question

The combination for opening a safe is a four-digit number made up of different digits. How many different combinations can you make, using only odd digits?

Answer 1

Answer: Hi! Hope this helps.

Answer 2

Given,

The combination for opening a safe is a four-digit number made up of different digits.

To Find,

How many different combinations can you make, using only odd digits?

Solution,

Single digit odd numbers= 1, 3, 5, 7 and 9

As the number of digits present are 5.

The number of digits required for opening a safe is a four digits.

So the number of possible combinations will be= 5*4*3*2

                                                                               = 120

Hence, the required number is 120.

We can make upto 120 four-digit possible combinations which can open the safe.

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