I am a number. I am a two-digit number. I am a multiple of 7. My digits add up to 10. I am greater than 40. What number am I?
Answer and explanation
Correct answer: A. 91
- Step 1: Use the first clues to list the numbers that fit. Step 2. Test each remaining clue against that list. Step 3. Only 91 satisfies every clue. Answer: 91. Why not the others: 28: This breaks the clue 'I am greater than 40.'. 84: This breaks the clue 'My digits add up to 10.'. 98: This breaks the clue 'My digits add up to 10.'.
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