9MathQ01-3,5
Chapter 1
Sets and Functions
Exercise 1.1
- Write each of the following sets (i) in set builder form (ii) in listing its elements.
(1) The set N of natural numbers.
(2) The set J of all positive integers.
(3) The set P of all prime numbers.
(4) The set A of all positive integers that lie between 1 and 13.
(5) The set B of real numbers which satisfy the equation 3x2 + 5x – 2 = 0. - Choose a suitable description (a) of (b) or (c) in set builder form for the following sets.
(1) E ={ 2, 4, 6, 8}
(a) E = { x/ x is an even integer less than 10 }
(b) E = { x/ x is an even positive integer less than 10 }
(c) E = { x / x is positive integer, x< 10 and x is a
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