Find out the odd word/letters/number/number pair from the given alternatives.
- A687
- B777
- C993
- D745
Solution & Step-by-step Explanation
Let's evaluate the sum of the digits for each number option:
For 687: 6+8+7=21 (divisible by 3)
For 777: 7+7+7=21 (divisible by 3)
For 993: 9+9+3=21 (divisible by 3)
For 745: 7+4+5=16 (not divisible by 3)
Since the sum of the digits for options A, B, and C is exactly 21, they are all divisible by 3. Option D (745) has a digit sum of 16 and is the odd one out.
For 687: 6+8+7=21 (divisible by 3)
For 777: 7+7+7=21 (divisible by 3)
For 993: 9+9+3=21 (divisible by 3)
For 745: 7+4+5=16 (not divisible by 3)
Since the sum of the digits for options A, B, and C is exactly 21, they are all divisible by 3. Option D (745) has a digit sum of 16 and is the odd one out.