Question : The difference between the greatest and the least four-digit numbers that begin with 3 and end with 5 is:
Option 1: 999
Option 2: 900
Option 3: 990
Option 4: 909
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Correct Answer: 990
Solution :
The least 4-digit number to start with 3 and end with 5 is 3005.
The greatest 4-digit number to start with 3 and end with 5 is 3995.
Now, the difference = (3995 – 3005) = 990
Hence, the correct answer is 990.
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