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  • The sum of all the four-digit numbers that can be formed using all the digits 2, 1, 2, 3 is equal to _______.Option: 1 26664<div class=

The sum of all the four-digit numbers that can be formed using all the digits 2, 1, 2, 3 is equal to _______.

Option: 1

26664


Option: 2

-


Option: 3

-


Option: 4

-


Answers (1)

best_answer

-\quad-\, \, \, \underline{1}\, \, \, \, \frac{3 !}{2 !}=3

-\quad-\, \, \, \, \, \underline{2}\, \, 3 !=6

-\quad-\, \, \, \underline{3}\, \, \, \,\, \, \, \, \, \frac{3 !}{2 !}=3

Sum of digits of unit place =3 \times 1+6 \times 2+3 \times 3=24

Required sum

\begin{aligned} & =24 \times 1000+24 \times 100+24 \times 10+24 \times 1 \\ & =24 \times 1111 \\ & =26664 \end{aligned}

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Gunjita

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