9th Standard English Medium Maths Subject Set Language Book Back 5 Mark Questions with Solution Part - I

9th Standard

    Reg.No. :
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Maths

Time : 01:00:00 Hrs
Total Marks : 25

    5 Marks

    5 x 5 = 25
  1. Using the adjacent Venn diagram, find the following sets:
    (i) A-B
    (ii) B-C
    (iii) A'\(\cup \)B')
    (iii) A'\(\cap \)B'
    (iv) (B\(\cup \)C)'
    (vi) A-(B\(\cup \)C)
    (vii) A-(B\(\cap \)C)

  2. If A, B and C are overlapping sets, then draw Venn diagram for the following sets:
    (i) (A-B)\(\cap \)C
    (ii) (A\(\cup \)C)-B
    (iii) A-(A\(\cap \)C)
    (iv) (B\(\cup \)C)-A
    (v) A\(\cap \)B\(\cap \)C

  3. If A = {x : x = 6n, n\(\in \)W and n < 6}, B = {x : x = 2n, n \(\in \)N and 2 < n ≤ 9} and C = {x : x = 3n, n\(\in \)N and 4n ≤ n < 10}, then show that \(A-(B\cap C)=(A-B)\cup (A-C)\).

  4. If A = {y : y =\(\frac { a+1 }{ 2 } \), a \(\in \) W and a ≤ 5}, B = {y : y =\(\frac { 2n-1 }{ 2 } \), n\(\in \)W and n < 5} and C =\(\left\{ -1,-\frac { 1 }{ 2 } ,1,\frac { 3 }{ 2 } ,2 \right\} \), then show that \(A-(B\cup C)=(A-B)\cap (A-C)\).

  5. Verify \(n\left( A\cup B\cup C \right) =n(A)+n(B)+n(C)-n(A\cap B)-n(B\cap C)-n(A\cap C)+n(A\cap B\cap C)\)for the following sets.
    (i) A = {a, c, e, f , h} , B = {c, d, e, f } and C = {a, b, c, f }
    (ii) A = {1, 3, 5} , B = {2, 3, 5, 6} and C = {1, 5, 6, 7}

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