Set a contains 11 letters and 9 numbers. set b contains 8 letters and 11 numbers. five letters and 3 numbers are common to both sets a and b. find the number of elements in set a or set b.

There are 31 elements in set A or set B.

Step-by-step explanation:

Consider the provided information.

Set A contains 11 letters and 9 numbers.

Total there are 11+9=20 elements in set A.

Set B contains 8 letters and 11 numbers.

Total there are 8+11=19 elements in set B.

Five letters and 3 numbers are common to both sets A and B.

Total there are 5+3=8 elements common in both sets

Use the formula:

Hence, there are 31 elements in set A or set B.

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step-by-step explanation:

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