Question

) If the number of proper subset of a set is 63,then the number of elements of the set is (3)

……….

(b) If A={x:x is a letter in the word “MATHEMATICS”} and

B= {y : y is a letter in the word “STATISTICS” } then, find

(i) A - B (ii) AB​

Answer 1

Step-by-step explanation:

a) If the number of proper subset of a set is 63,then the number of elements of the set is

6

……….

solution

(2^n)-1=63

2^n=63+1

2^n = 64

2^n = 2^6

n=6

b) If A={x:x is a letter in the word “MATHEMATICS”} and

solution

A={M, A T H, E I, C, S}

B= {y : y is a letter in the word “STATISTICS” }

B= {S, T A I, C}

(I) A-B={M, H, E}

(II) B-A= { S}