If a number is divisible by both 5 and 10, which of the following can be conclud

Practice Questions

Q1
If a number is divisible by both 5 and 10, which of the following can be concluded?
  1. It is a multiple of 15.
  2. It is a multiple of 20.
  3. It is a multiple of 50.
  4. It is a multiple of 10.

Questions & Step-by-Step Solutions

If a number is divisible by both 5 and 10, which of the following can be concluded?
  • Step 1: Understand what it means for a number to be divisible by 5. A number is divisible by 5 if it ends in 0 or 5.
  • Step 2: Understand what it means for a number to be divisible by 10. A number is divisible by 10 if it ends in 0.
  • Step 3: If a number is divisible by both 5 and 10, it must end in 0 (because it is divisible by 10).
  • Step 4: Since the number ends in 0, it is also divisible by 5 (because all numbers that end in 0 are divisible by 5).
  • Step 5: Therefore, if a number is divisible by 10, it is also a multiple of 10.
  • Divisibility Rules – Understanding the rules of divisibility, particularly for the numbers 5 and 10.
  • Multiples – Recognizing that if a number is divisible by 10, it is also a multiple of 10.
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