Subject: General Aptitude · Chapter: Problems on Numbers · Exam: · Marks: · Difficulty:
What is the two-digit number whose first digit is a and the second digit is b? The number is greater than 9. (M.A.T., 2000) I. The number is a multiple of 51. II. The sum of the digits a and b is 6.
Answer
SELF-PRACTICE — the source book printed no answer.
Nothing is invented here, so this question has no answer on record.
Explanation
The only two-digit number which is a multiple of 51, is 51. So, I alone gives the answer while II alone does not. ∴ The correct answer is (a).
Explanation as extracted from the printed page; notation may be imperfect.