NSTSE (National Science Talent Search Exam- Unified Council) Class 3: Questions 1 of 2213
Question MCQ▾
How many numbers are there which contain four digits?
Choices
Choice (4) | Response | |
---|---|---|
a. | 9999 | |
b. | 1000 | |
c. | 9000 | |
d. | 9099 |
Answer
c.
Explanation
- The numbers from 1000 to 9999 are having four digits.
- So, (greatest 4-digit number) – (least 4 – digit number) + 1
- Greatest 4-digit number = 9999
- Least 4 – digit number = 1000
- = 9999 - 1000 + 1
- = 8999 + 1
- = 9000
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