A man is typing numbers 5 to 700 on his computer. How many times does he press the key of his computer
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Total number of times key is pressed = 1988
Step-by-step explanation:
Number of times key pressed from 5 to 9 =5
Number of times key pressed from 10 to 99 =90×2
= 180
Number of times key pressed from 100 to 700 = 601 × 3
= 1803
Total number of times key is pressed = 1803 + 180+ 5
= 1988
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