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Q: 276x1, is divisible by 3. What is the sum of the possible values of x?
  • A. 18
  • B. 21
  • C. 12
  • D. 15
Correct Answer: Option D - If the sum of all digits of a number is divisible by 3, then the number will be divisible by 3. 276x1, is divisible by 3. 2 + 7 + 6 + x + 1 = 16 + x The number will be completely divisible by 3, by putting the possible values of x as 2, 8, and 5. Hence, the sum of the possible values of x = 2+8+5 =15
D. If the sum of all digits of a number is divisible by 3, then the number will be divisible by 3. 276x1, is divisible by 3. 2 + 7 + 6 + x + 1 = 16 + x The number will be completely divisible by 3, by putting the possible values of x as 2, 8, and 5. Hence, the sum of the possible values of x = 2+8+5 =15

Explanations:

If the sum of all digits of a number is divisible by 3, then the number will be divisible by 3. 276x1, is divisible by 3. 2 + 7 + 6 + x + 1 = 16 + x The number will be completely divisible by 3, by putting the possible values of x as 2, 8, and 5. Hence, the sum of the possible values of x = 2+8+5 =15