Alok wanted to type the first 200 natural numbers. How many times does he have to press the keys?

Question

Alok 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

Tardigrade Admin · Accepted Answer

(i) Count the number of digits appear from 1 to 200 , when written at a stretch.
(ii) For each single, double, and triple digit numbers, we have to press keys once, twice, and thrice, respectively.
(iii) There are 9 single digit, 90 double digit, and 101 triple digit numbers from 1 to 200 .

Q. Alok wanted to type the first 200 natural numbers. How many times does he have to press the keys?

400

365

492

489

(i) Count the number of digits appear from 1 to 200 , when written at a stretch. (ii) For each single, double, and triple digit numbers, we have to press keys once, twice, and thrice, respectively. (iii) There are 9 single digit, 90 double digit, and 101 triple digit numbers from 1 to 200 .

(i) Count the number of digits appear from 1 to 200 , when written at a stretch.
(ii) For each single, double, and triple digit numbers, we have to press keys once, twice, and thrice, respectively.
(iii) There are 9 single digit, 90 double digit, and 101 triple digit numbers from 1 to 200 .