Answer:
It can be 100001, 100000,000001,000000
Hence, answer is 4.
its also can be found through 2C2 *2 = 2!/0! *2 =2*2 =4
Explanation:
The answer is straight forward, we have 2 empty places and we can select from 2 items, and hence its 2C2, and now we can arrange them as well, and since we can arrange in 2 ways, hence a total number of possibility = 2 * 2C2 = 4, which is the required answer.
