Aptitude Discussion

Q. |
When writing numbers from 1 to 10,000, how many times is the digit 9 written? |

✖ A. |
3200 |

✖ B. |
3600 |

✔ C. |
4000 |

✖ D. |
4200 |

**Solution:**

Option(**C**) is correct

The digits 9 occurs in the thousands place in 1000 numbers.

It occurs in the hundreds place in 1000 numbers and so on

The digit occurs **4000 times**.

**Edit:** For an alternative solution, check comment by **Sravan Reddy.**

**Sravan Reddy**

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**GayathriRaju**

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I cant understand the answer in this question

**Saustav**

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Hi

I calculated in excel, the total count comes to 3439.

By writing all numbers in 4 digit form like 0000,0001,0002....0011,0012...0100,0101...1000,1001...9999.

There is total of 10,000 numbers above and all are 4 digit numbers.

So total digits used is 40,000 and due to symmetry each digit repeats equally. i.e, 4000 times.

So, answer is 4000