Permutations are all possible variations, in which a set of numbers or characters can be ordered. <span>The number of permutations on a set of </span><span> n elements is given by </span><span> n!. </span>In our case we have 9 digits, which means 9 elements.
There are 9!=9*8*7*6*5*4*3*2*1=362880 possible variations, or 362880 possible identification numbers.
The answer you are looking for is 27
At a zoo it has been found that the total amount of bamboo shoots eaten by 3 pandas in a day is 181.5 pounds. Also it is given that the male panda eats 3 times as that of the baby panda and the female panda eats 2 times as that of the baby panda.
Let us assume that the amount of bamboo shoot eaten by the baby panda in a day = X
The amount of bamboo shoots eaten by the male panda in a day = 3X
Amount of bamboo shoots eaten by the female panda in a day = 2X
Then
X + 3X + 2X = 181.5
6X = 181.5
X = 181.5/6
= 30.25
So the baby panda eats a total of 30.25 pounds of bamboo shoots in a day.
The amount of bamboo shoots eaten by the female panda in a single day = 2 * 30.25
= 60.50
So the female panda eats 60.50 pounds of bamboo shoots in a day.