4. a) 10 samples of different publishers are on display at a book store customers. Customers are told that they can choose any 4 samples for free. How many different selections can a customer make? b)...

4. a) 10 samples of different publishers are on display at a book store customers.
                Customers are told   that they can choose any 4 samples for free.
                       How many different selections can a customer make?

b) How many different arrangement that they can make with the letters of the words
                                                                MANAGEMENT


5) In an AP the 4th Term is 23 and the 11th Term is 58.
What is the sum of the first twenty terms?
6) In a AP the T5 = 40  and T9 = 76. Find S10.

7) Universal Set { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10},
Set A – { Odd Numbers} and Set B – { Prime Numbers}

 Answer the following questions.
a)      B =                        b) A –B =                    c) A∩ B’ =
                  d) n(AUB) =                           e) A’∩B’ =