Odd and even

Question 1

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

• A. always even
• B. always odd

Question 2

Without working it out, is 90 × 40 odd or even?

• A. even
• B. odd

Question 3

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

• A. always even
• B. always odd

Question 4

Without working it out, is 25 + 27 odd or even?

• A. even
• B. odd

Question 5

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

• A. always even
• B. always odd

Question 6

Without working it out, is 59 × 90 odd or even?

• A. even
• B. odd

Question 7

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

• A. always even
• B. always odd

Question 8

Without working it out, is 42 + 58 odd or even?

• A. even
• B. odd

Question 9

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

• A. always even
• B. always odd

Question 10

Without working it out, is 28 × 74 odd or even?

• A. even
• B. odd

Question 11

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

• A. always even
• B. always odd

Question 12

Without working it out, is 75 + 22 odd or even?

• A. even
• B. odd

Question 13

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

• A. always even
• B. always odd

Question 14

Without working it out, is 25 × 78 odd or even?

• A. even
• B. odd

Question 15

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

• A. always even
• B. always odd

Question 16

Without working it out, is 78 + 67 odd or even?

• A. even
• B. odd