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In a state with a population of $75 \times 10^{\circ}, 45 \%$ of them know Hindi, $22 \%$ know English, $18 \%$ know Sanskrit, $12 \%$ know Hindi and English, $8 \%$ know English and Sanskrit, $10 \%$ know Hindi and Sanskrit and $5 \%$ knowall the three languages.
What is the number of people who know only one language
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What is the number of people who know only one language
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$4 \times 10^{6}$
Number of people who know only one language $=a+b+c=21 \times 10^{6}+5.25 \times 10^{6}+3.75 \times 10^{6}$
$=30 \times 10^{6}=3 \times 10^{7} .$
$=30 \times 10^{6}=3 \times 10^{7} .$
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