Question

if A =( 5, 7,8,9 ), B = ( 3, 4,5,6 ) and C = ( 2, 4,6,8 10) where n is total number of distinct elements in a set . find n (a) +n (b)
options (a ) 2 (b) 4 ( c ) 6 (d) 8 (e) 10
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Answer 1

Step-by-step explanation:

A = {5,7,8,9} (n=4)

B = {3,4,5,6} (n=4)

C = {2,4,6,8,10} (n=5)

So, n(A) + n(B) = 4+4 =8

Therefore the correct option is d)8

Answer 2

Answer:

n(A) + n(B) = 8 ; option 'd' is correct.

Step-by-step explanation:

given information:

A = {5, 7 , 8, 9}

B = {3, 4, 5, 6}

C = {2, 4, 6, 8, 10}

n(a) means number of elements present in a given set 'a'

we have to find the value of n(A) + n(B)

in set A , number of elements are :4

in set B , number of elements are :4

in set C , number of elements are :5

so , n(A) = 4 and n(B) = 4

n(A) + n(B) = 4 + 4 = 8

option 'd' is correct.