How many 6-digit numbers can be formed using the digits 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, if repetitions of digits are allowed?

1 answer:

6 0

There are 6 digits. Each digit can take ten different numbers except for the first digit since it cannot be zero.

So:

9 x 10 x 10 x 10 x 10 x 10

900000 numbers.

Another way of thinking about this is to just count up to 999,999. Obviously there are 999,999 different numbers here. But since our number has to have 6 digits in them, we have to delete 99,999 numbers. Thus there are 900,000 different numbers.

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olganol [36]

Answer:

Well, Your best answer will be is 225° rotation. Because, The points A' and C' are tilted more than 180 degrees from the origin of rotation. If it were 90 degrees, the A' and C' would have been in the right side. So, The best answer will be is 225°. 

Hope That Helps!

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