math Q:all the whole numbers with a digit of 2 are written in increasing order?

Question

math Q:all the whole numbers with a digit of 2 are written in increasing order. The list begins 2, 20, 21, 22 .... Find the 1000th digit thus written. The answers you can choose from are A)6, B)7 C)8 D)9.. explainn your answer.. good luck.!

Answer 1

The 1000'th number is 1457.
I wrote a computer program to list all the numbers.


1 2
2 12
3 20
4 21
5 22
6 23
7 24
8 25
9 26
10 27
11 28
12 29
13 32
14 42
15 52
16 62
17 72
18 82
19 92
20 102
21 112
22 120
23 121
........................

991 2448
992 2449
993 2450
994 2451
995 2452
996 2453
997 2454
998 2455
999 2456
1000 2457

Answer 2

There are ninety 2-digit numbers utilising absolute values (ninety 9 minus the 1st 9 digits). In each and each block of 10, there is one that encompasses a 9. So there are 80 a type of whilst utilising absolute values. in case you do no longer use absolutes, it is 162 (80 one helpful and 80 one unfavorable).

Answer 3

yeah you forgot 12. But... somewhere in that book where you got this question... is the formula that tells you how to get your answer. i remember doing problems like this, i just dont remember what the formula is... thats what happens to knowledge when its not exercised.

Answer 4

Damn... lazy people...

You need to do your own work... cuz it looks like you are trying to get some one to answer your homework question.

and that is just plain lazy.

if you don't do it yourself you'll never understand any of the material.

Answer 5

explain your question

doesn't make sense