No. of combinations by selecting one or more than one object out of n objects is:

Number of ways of selecting one or more things out of n dissimilar things are

Number of ways of selecting one or more things out of n dissimilar things are

Number of ways of selecting one or more things out of n dissimilar things are

The number of ways of selecting one or more things out of n dissimilar things is

Which of the following is not the number of ways of selecting n objects from 2n objects of which n objects are identical

Which of the following is not the number of ways of selecting n objects from 2n objects of which n objects are identical