Flag Algebra> How many keystrokes are needed to type nu...
question mark

Hello Friends!!!

I have a Question....

How many keystrokes are needed to type numbers from 1 to 1000?

Reply asap!!!!!!

avinash sharma , 16 Years ago
Grade Upto college level
anser 1 Answers
Vijay Luxmi Askiitiansexpert

Last Activity: 16 Years ago

Here hile typing numbers from 1 to 1000, you have 9 single digit numbers from 1 to 9. Each of them require one keystroke. That is 9 key strokes.

There are 90 two-digit numbers, from 10 to 99. Each of these numbers require 2 keystrokes. Therefore, one requires 180 keystrokes to type the 2 digit numbers.

There are 900 three-digit numbers, from 100 to 999. Each of these numbers require 3 keystrokes. Therefore, one requires 2700 keystrokes to type these 3 digit numbers.

Then 1000 is a four-digit number which requires 4 keystrokes.

Totally, therefore, one requires 9 + 180 + 2700 + 4 = 2893 keystrokes.

star
LIVE ONLINE CLASSES

Prepraring for the competition made easy just by live online class.

tv

Full Live Access

material

Study Material

removal

Live Doubts Solving

assignment

Daily Class Assignments