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**Example 1.**

Is 15 + 31 even or odd?

Solution :

15 = odd number

31 = odd number

**Rule : odd + odd = even**

15 + 31 = 46, an even number

So, 15 + 31 is even.

**Example 2 :**

Is 16 + 110 even or odd?

Solution :

16 = even number

110 = even number

**Rule : even + even = even**

Moreover,

16 + 110 = 126, an even number

So, 16 + 110 is even.

**Example 3 :**

Is 9 + 88 even or odd?

Solution :

9 = odd number

88 = even number

**Rule : odd + even = odd**

Moreover,

9 + 88 = 97, an odd number

So, 9 + 88 is odd.

**Example 4 :**

Is 200 + 111 even or odd?

Solution :

200 = even number

111 = odd number

**Rule : even + odd = odd**

Moreover :

200 + 111 = 311, an odd number

So, 200 + 111 is odd.

**Example 5 :**

Is 100 x 52 even or odd?

Solution :

100 = even number

52 = even number

**Rule : even x even = even**

Moreover,

100 x 52 = 5200, an even number

So, 100 x 52 is even.

**Example 6 :**

Is 11 x 12 even or odd?

Solution :

11 = odd number

12 = even number

**Rule : odd x even = even**

Moreover,

11 x 12 = 132, an even number

So, 11 x 12 is even.

**Example 7 :**

Is 89 x 17 even or odd?

Solution :

89 = odd number

17 = odd number

**Rule : odd x odd = odd**

Moreover,

89 x 17 = 1513, an odd number.

So, 89 x 17 is odd.

**Example 8:**

Is 76 x 13 even or odd?

Solution :

76 = even number

13 = odd number

**Rule : even x odd = even**

Moreover,

76 x 13 = 988, an even number.

So, 76 x 13 is even.

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