alleryStart learning →How many 2-digit numbers can be made from the digits 3, 5 and 7 if no digit repeats?
A9
B3
C6
D5
Answer & Solution
Correct answer: C. 6
There are 3 choices for the tens digit and 2 left for the ones digit, so 3 times 2 is 6 numbers.
Keep practising Days, dates and possible combinations
Browse all Days, dates and possible combinations questions for Olympiad (Class 4), or explore more Reasoning topics.
Related questions
In a 28-day month, how many times does each weekday come?5 June is a Friday. No leap day comes before the next 5 June. What day is 5 June next yearWhich one does not belong with the others: Monday, Friday, April, Sunday?A 28-day February starts on a Sunday. What day is 28 February?A 30-day month starts on a Wednesday. How many Sundays does it have?Raj visits a park every 4 days and Mina every 6 days. They meet today. After how many daysAnu swims on Monday and then every 3 days after that. On which day is her 4th swim?A coin is tossed two times. How many different results can happen?