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CTET Whole Numbers — practice questions — page 2

Explore 46 free Whole Numbers questions in CTET Mathematics. Open each question or exercise to read its content, reference answers and available explanation.

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Whole Numbers questions and exercises with answers

Showing questions 31–46 of 46.

A whole number written in binary is odd when its last digit is what?Read the answer and worked solution →The sum of an even number and an odd number is always what?Read the answer and worked solution →What do you always get when you add two odd numbers?Read the answer and worked solution →An even number is multiplied by an odd number. The product is what?Read the answer and worked solution →When is the product of two whole numbers odd?Read the answer and worked solution →Which is the only even prime number?Read the answer and worked solution →What does Goldbach's conjecture say about every even integer greater than 2?Read the answer and worked solution →How did the ancient Greeks regard the number 1, the monad?Read the answer and worked solution →Which of these cannot be called even or odd?Read the answer and worked solution →All known perfect numbers have which parity?Read the answer and worked solution →Why is 1 divided by 4 neither even nor odd?Read the answer and worked solution →Which digit of 8,374 decides whether the number is divisible by 2?Read the answer and worked solution →A number is divisible by 3 if which of its sums is divisible by 3?Read the answer and worked solution →Which number is divisible by 4, judging by its last two digits?Read the answer and worked solution →Why do only the last two digits matter when testing divisibility by 4?Read the answer and worked solution →A class register has 475 pupils. Which fact shows the count is divisible by 5?Read the answer and worked solution →

Worked practice questions

A whole number written in binary is odd when its last digit is what?

  1. The digit 1
  2. The digit 0
  3. The digit 2
  4. The digit 9
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Correct answer: A. The digit 1

1. Binary uses only the digits 0 and 1. 2. A binary number is odd if its last digit is 1 and even if it is 0. 3. The digit 2 does not exist in binary. _Source: Wikipedia, Parity (mathematics), lead section_

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The sum of an even number and an odd number is always what?

  1. Even
  2. Zero
  3. Odd
  4. Prime
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Correct answer: C. Odd

1. Try 4 + 7 = 11. 2. The rule is even + odd = odd. 3. Even + even and odd + odd both give even results, so those do not apply here. _Source: Wikipedia, Parity (mathematics), Addition and subtraction_

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What do you always get when you add two odd numbers?

  1. An odd number
  2. An even number
  3. A prime number
  4. A square number
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Correct answer: B. An even number

1. Try 5 + 9 = 14. 2. The rule is odd + odd = even. 3. Only an odd plus an even gives an odd sum. _Source: Wikipedia, Parity (mathematics), Addition and subtraction_

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