If A and B are two sets such that A has 40 elements, A B has 60 elem – McqOptions

MCQOPTIONS

1.	If A and B are two sets such that A has 40 elements, A B has 60 elements and A B has 10 elements, how many elements does B have?
A.	40
B.	30
C.	45
D.	50
Answer» C. 45

Discussion

No Comment Found

Related MCQs

If A = {a, d}, B = {b, c, e} and C = {b, c, f}, then A (B C) =<br>
Let A = {x: x N x is a multiple of 2}; <br>B = {x: x N x is a multiple of 5}; <br>C = {x: x N x is a multiple of 10}; <br>Describe the set (A B) C,
If U = {2, 3, 4, 5, 6, 7, 8, 9, 10, 11}, <br>A = {2, 4, 7}, <br>B = {3, 5, 7, 9, 11} and <br>C = {7, 8, 9, 10, 11}.<br>compute: (A U) (B C)
If <b>A</b> = {1, 2, 3}, <b>B</b> = {2, 3, 4}, <b>C</b> = {1, 3, 4} and <b>D</b> = {2, 4, 5}, then <b>(A B) (C D)</b> = ?
If A = {a, d}, B = {b, c, e} and C = {b, c, f}, then A (B C) = <br>
Find the cardinal number of the following set : <br>{x : x is a letter of the word ASSASSINATION }
Which of the following statements is false for the sets A, B and C, where:<br> A = {x | x is letter of the word BOWL }<br>B = {x | x is a letter of the word ELBOW }<br> C = {x | x is a letter of the word BELLOW }
Which of the following pairs of sets are disjoint?<br>(i) {1, 2, 3, 4 } and { x : x is a natural number and 4 x 6 } <br>(ii) { a, e, i, o, u } and { c, d, e, f } <br>(iii) { x : x is an even integer } and { x : x is an odd integer }.
If <b>A</b> = {1, 2, 3, 4, 5} and <b>B</b> = {2, 4, 6} then what is the value of <b>A - B</b> ?
If <b>A</b> = { 2 , 3 , 5 , 7 , 11 } and <b> B</b> = { 1, 3, 5, 7, 9, 11} then what is the value of <b>A ? B </b>?