Find the total numbers with 2 digits and 1 digit, and also add them.

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Find the total numbers with 2 digits and 1 digit, and also add them.

Kamendra kumar 20th Mar, 2023

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Answer (1)

Kamendra kumar 20th Mar, 2023

Numbers with 2 digits:

\begin{aligned}

&=99-10\\

&=89+1\\

&=90

\end{aligned}

Numbers with 1 digits:

\begin{aligned}

&=9-1\\

&=8+1\\

&=9

\end{aligned}

Ninety

Nine

On adding them, we get:

\begin{aligned}

&=90+9\\

&=99

\end{aligned}

Ninety nine

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