If the number 467X4 is divisible by 9, find the value of the digit marked as X.
| Question | If the number 467X4 is divisible by 9, find the value of the digit marked as X. | |
| Type | multiple_choice | |
| Option | 4 | incorrect |
| Option | 5 | incorrect |
| Option | 6 | correct |
| Option | 7 | incorrect |
| Solution | The number is divisible by 9 so the sum of its digits would be divisible by 9. ∴4 + 6 + 7 + X + 4 = 21+ X, must be divisible by 9. X = 6, fulfills our requirement so the required digit is 6. | |