Question

What is the sum of all the five digit numbers formed by using the digits 0,1,2,3,4 which are less than 20000 where the digits not repeated

Answer 1

Answer:

299994

Step-by-step explanation:

5 Digit number

Start with 1 for less than 20000

2nd digit can be 0 , 2 , 3 or 4

3rd digit can be 1 lesser & so on

Total number 4*3 *2*1 = 24

Each digit (out of 0 , 2 , 3 * 4) will come 6 times at each place

Unit Place sum = 6(0 + 2 + 3 + 4) = 54

10's place sum = 54*10 = 540

100'sPlace = 5400

1000's Place = 54000

10000's Place = 240000

Sum of 5 Digit Number = 240000 + 54000 + 5400 + 540 + 54

= 299994

sum of all the five digit numbers formed by using the digits 0,1,2,3,4 which are less than 20000 where the digits not repeated = 299994

Here are numbers :

10234

10243

10324

10342

10423

10432

12034

12043

12304

12340

12403

12430

13024

13042

13204

13240

13402

13420

14023

14032

14203

14230

14302

14320

Sum = 299994