ICSE ICSE Class 7 - CISCE Question Bank Solutions for Mathematics

For the universal set {4, 5, 6, 7, 8, 9, 10, 11,12,13} ; find the subset of B = {odd numbers greater than 8}.
Also, find a complement of B.

For the universal set {4, 5, 6, 7, 8, 9, 10, 11,12,13} ; find the subset of C = {prime numbers}.
Also, find a complement of C.

For the universal set {4, 5, 6, 7, 8, 9, 10, 11,12,13} ; find the subset of D = {even numbers less than 10}.
Also, find a complement of D.

If A = {4, 5, 6, 7, 8} and B = {6, 8, 10, 12}, find: A∪B

If A = {4, 5, 6, 7, 8} and B = {6, 8, 10, 12}, find: A∩B

If A = {4, 5, 6, 7, 8} and B = {6, 8, 10, 12}, find: A - B

If A = {4, 5, 6, 7, 8} and B = {6, 8, 10, 12}, find: B - A

If A = {3, 5, 7, 9, 11} and B = {4, 7, 10}, find: n(A)

If A = {3, 5, 7, 9, 11} and B = {4, 7, 10}, find: n(B)

If A = {3, 5, 7, 9, 11} and B = {4, 7, 10}, find: A∪B and n(A∪B)

If A = {3, 5, 7, 9, 11} and B = {4, 7, 10}, find: A ∩ B and n(A ∩ B)

If A = {2, 4, 6, 8} and B = {3, 6, 9, 12}, find: (A ∩ B) and n(A ∩ B)

If A = {3, 5, 7, 9, 11} and B = {4, 7, 10}, find: (A – B) and n(A – B)

If A = {3, 5, 7, 9, 11} and B = {4, 7, 10}, find: n (B)

If P = {x : x is a factor of 12} and Q = {x: x is a factor of 16}, find : n(P)

If P = {x : x is a factor of 12} and Q = {x: x is a factor of 16}, find : n(Q).

If P = {x : x is a factor of 12} and Q = {x: x is a factor of 16}, find : Q – P and n(Q – P).

Find three rational numbers equivalent to `3/5`

Find three rational numbers equivalent to `4/-7`

Find three rational numbers equivalent to `-5/9`