Write the cardinal number of each of the following sets:

D = set of letters in the word "PANIPAT".

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Solution

Step : Finding the cardinal number of the given set

Given : D = set of letters in the word "PANIPAT".
The letters in the word “PANIPAT” are P,A,N,I,P,A,T.

But different letters are P,A,N,I,T i.e., 5 elements.

We know that the cardinal number of a set is the number of elements in it.
Hence, the cardinal number of set D is 5.

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