Odd and even

Question 1

Without working it out, is 78 + 51 odd or even?

• A. even
• B. odd

Question 2

Is the sum of two even numbers always odd or always even?

• A. always even
• B. always odd

Question 3

Without working it out, is 90 + 91 odd or even?

• A. even
• B. odd

Question 4

Is the sum of two even numbers always odd or always even?

• A. always even
• B. always odd

Question 5

Without working it out, is 23 × 28 odd or even?

• A. even
• B. odd

Question 6

Is the product of an odd and an even number always odd or always even?

• A. always even
• B. always odd

Question 7

Without working it out, is 70 + 79 odd or even?

• A. even
• B. odd

Question 8

Is the sum of two even numbers always odd or always even?

• A. always even
• B. always odd

Question 9

Without working it out, is 71 × 54 odd or even?

• A. even
• B. odd

Question 10

Is the product of an odd and an even number always odd or always even?

• A. always even
• B. always odd

Question 11

Without working it out, is 82 × 42 odd or even?

• A. even
• B. odd

Question 12

Is the product of an odd and an even number always odd or always even?

• A. always even
• B. always odd

Question 13

Without working it out, is 90 × 99 odd or even?

• A. even
• B. odd

Question 14

Is the sum of two even numbers always odd or always even?

• A. always even
• B. always odd

Question 15

Without working it out, is 36 × 89 odd or even?

• A. even
• B. odd

Question 16

Is the sum of an odd and an even number always odd or always even?

• A. always even
• B. always odd