Recent questions tagged sequence-series

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In four-digit integer numbers from $1001$ to $9999$, the digit group $\text{“37”}$ (in the same sequence) appears ________ times.$270$$279$$280$$299$
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In a certain code, $AMCF$ is written as $EQGJ$ and $NKUF$ is written as $ROYJ.$ How will $DHLP$ be written in that code$?$$RSTN$ $TLPH$ $HLPT$ $XSVR$
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