Task Sets: Venn Diagrams with Two Events - Uganda NCDC Primary 7 Mathematics

Recall / Warm-Up

These problems review set membership and subsets from earlier lessons.

$An oval labelled A containing the numbers 2, 4, 6, 8, with 5 and 7 shown outside it$

The set $A = \{2, 4, 6, 8\}$ . Which statement is true?

$6 \in A$ and $5 \notin A$

$5 \in A$ and $6 \notin A$

$7 \in A$ and $4 \notin A$

$2 \notin A$ and $8 \notin A$

$A two-circle Venn diagram inside a rectangle, with the four regions marked P, Q, R, S and the rectangle corner marked with a question mark$

In a two-circle Venn diagram, the rectangle that surrounds both circles stands for which set?

The empty set

The universal set $E$

The intersection $A \cap B$

The union $A \cup B$

A group of learners is listed as $\{Ana, Ben, Cora, Deo, Efua\}$ . How many learners are in the group?

Fluency Practice

$A blank two-circle Venn diagram with universal set E, set A football, set B volleyball, and four regions numbered 1 to 4$

On a two-circle Venn diagram, which region holds learners who like football but not volleyball?

Region 1, the A-only crescent

Region 2, the centre overlap

Region 3, the B-only crescent

Region 4, outside both circles

$A two-circle Venn diagram with the number 6 written twice, once in the A-only crescent and once in the overlap, each marked with a question mark$

The number 6 has been written in the A-only crescent AND again in the overlap. In which single region does 6 belong, given that 6 is in both $A$ and $B$ ?

In the A-only crescent

In the overlap $A \cap B$ only

In both the crescent and the overlap

In the region outside both circles

$A blank two-circle Venn diagram with universal set E and empty circles A and B, ready for elements to be placed$

For $E = \{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12\}$ , $A = \{$ multiples of 3 $\}$ , $B = \{$ multiples of 4 $\}$ . How many elements go in the overlap $A \cap B$ ?

$A completed two-circle Venn diagram: A only holds 2, 4, 8; the overlap holds 6; B only holds 3, 9; and 1, 5, 7 lie outside both circles$

Using the completed diagram, find $n(A \cup B)$ .

Exercises: Venn Diagrams with Two Events

Recall / Warm-Up

Fluency Practice