Two dice are thrown simultaneously. Let A be the event of getting sum less than 4 and B be the event of getting sum not more than 4. Find set “A and not B”.(a) {(1,1), (1,2), (2,1)}(b) {}(c) {(1,1), (1,2), (1,3), (2,1), (2,2), (3,1)}(d) {(1,3), (2,2), (3,1)}This question was addressed to me in homework.My query is from Probability in chapter Probability of Mathematics – Class 11

Two dice are thrown simultaneously. Let A be the event of getting sum

1.	Two dice are thrown simultaneously. Let A be the event of getting sum less than 4 and B be the event of getting sum not more than 4. Find set “A and not B”.(a) {(1,1), (1,2), (2,1)}(b) {}(c) {(1,1), (1,2), (1,3), (2,1), (2,2), (3,1)}(d) {(1,3), (2,2), (3,1)}This question was addressed to me in homework.My query is from Probability in chapter Probability of Mathematics – Class 11
Answer» Correct CHOICE is (b) {} The EXPLANATION is: A = {(1,1), (1,2), (2,1)} B= {(1,1), (1,2), (1,3), (2,1), (2,2), (3,1)} “A and not B” contains ELEMENTS which are in A but not in B. So, A and not B = {}.

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