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Raj wanted to type the first 200 natural...

Raj wanted to type the first `200` natural numbers,how many times does he have to press the keys

A

400

B

365

C

492

D

489

Text Solution

Verified by Experts

The correct Answer is:
C
(i) Count the number of digits appear from 1 to 200, when written at a stretch.
(ii) For each single, double and triple digit number we have to press keys once, twice and thrice respectively.
(iii) There are 9 single digit , 90 double digit and 101 triple digit number from 1 to 200.
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  • Allok wanted to type the first 200 natural numbers. How many times does he have to press the keys?

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    B
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