NSTSE (National Science Talent Search Exam Unified Council) Class 3: Questions 1 of 2041
» Mathematics » Numbers
MCQ▾
Question
How many numbers are there which contain four digits?
Choices
Choice (4)  Response  

a.  9999 

b.  9000 

c.  9099 

d.  1000 

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Answer
b.
Explanation
 The numbers from 1000 to 9999 are having four digits.
 So, (greatest 4digit number) – (least 4 –digit number) +1
 Greatest 4digit number = 9999
 Least 4 –digit number = 1000
 = 9999  1000 + 1
 = 8999 + 1
 = 9000