Consider the following example to understand Venn diagrams:

If universal Set U = x: 1≤ x ≤ 10, also set A = 2, 4 and set B = 2, 4, 9.

Then Venn diagram can be drawn as:

Here A ∩ B = 2, 4 and A U B = 2, 4, 9.

Following steps help us to understand how to solve venn diagrams:

**1) **First of all, identify how many shapes of Venn diagram (circles or ovals) are necessary. For instance, to eat 5 mangoes, five circles or ovals are taken.

**2) **Circles must be drawn on a plane white paper. Each of the circle must overlap other circle.

**3)** Name out each of the circle along with name of set and also write the total number of items in that set.

**4)** Then consider an intersecting part and look it carefully to find the number of elements commonly in both sets.

**5) **Fill numbers in the remaining shapes and interacting areas. Each part must have a number (zero is also numbered).

**6) **Add the total number of elements in Venn diagram to be sure that total equals to that amount which is asked in question.