Question

If you wrote all of the numbers from 300 to 400 on a piece of paper, how many times would you have written the number 3?

Answer 1

Each of the numbers from 300 to 399 inclusive has a 3 in the "hundreds" position. That makes 100.

Each number from 330 to 339 has a 3 in the tens position, That makes 10 more.

Then there are 10 numbers (303, 313, 323, .... 393) with a 3 in the units position. That's another 10.

So I make it 120 altogether.

Answer 2

Answer: 121 digits

Let us see these 300 to 310= there were <12> 3’s; 311 to 320= there were <11> 3’s; 321 to 330= <12> 3’s; 331 to 340= <20> 3’s; 341 to 350= <11> 3’s; 351 to 360= <11>; 361 to 370= <11>; 371 to 380 <11>; 381 to 390 <11>, 391 to 340 <11>

Total : 121 digits

Step-by-step explanation: