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Identify the odd one out: 15, 30, 45, 60, 75, 90, 100.

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Question: Identify the odd one out: 15, 30, 45, 60, 75, 90, 100.

Options:

  1. 15
  2. 30
  3. 100
  4. 90

Correct Answer: 100

Solution:

All numbers except 100 are multiples of 15. 100 is the odd one out.

Identify the odd one out: 15, 30, 45, 60, 75, 90, 100.

Practice Questions

Q1
Identify the odd one out: 15, 30, 45, 60, 75, 90, 100.
  1. 15
  2. 30
  3. 100
  4. 90

Questions & Step-by-Step Solutions

Identify the odd one out: 15, 30, 45, 60, 75, 90, 100.
  • Step 1: Look at the list of numbers: 15, 30, 45, 60, 75, 90, 100.
  • Step 2: Check if each number can be divided by 15 without leaving a remainder.
  • Step 3: Divide each number by 15: 15 ÷ 15 = 1, 30 ÷ 15 = 2, 45 ÷ 15 = 3, 60 ÷ 15 = 4, 75 ÷ 15 = 5, 90 ÷ 15 = 6.
  • Step 4: Check 100: 100 ÷ 15 = 6.67, which is not a whole number.
  • Step 5: Since 100 cannot be divided by 15 evenly, it is different from the others.
  • Step 6: Conclude that 100 is the odd one out.
  • Multiples – Understanding multiples of a number and identifying which numbers fit the criteria.
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