NSTSE (National Science Talent Search Exam- Unified Council) Class 3: Questions 1 of 2216

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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