Question Number 195390 by mathlove last updated on 01/Aug/23
$${which}\:{prime}\:{number}\:{between} \\ $$$${the}\:\:\mathrm{20}\:\:{and}\:\:\:\:\mathrm{1000}\:\:\: \\ $$
Answered by BaliramKumar last updated on 01/Aug/23
$$\mathrm{1}\:\mathrm{to}\:\mathrm{1000}\:=\:\mathrm{168}\:\mathrm{prime}\:\mathrm{numbers} \\ $$$$\mathrm{1}\:\mathrm{to}\:\mathrm{20}\:=\:\mathrm{8}\:\mathrm{prime}\:\mathrm{numbers} \\ $$$$\mathrm{20}\:\mathrm{to}\:\mathrm{1000}\:=\:\mathrm{168}\:−\:\mathrm{8}\:=\:\mathrm{160}\:\mathrm{prime}\:\mathrm{numbers} \\ $$$$ \\ $$
Commented by mathlove last updated on 01/Aug/23
$${how}\:{is}\:{faind}\:\mathrm{1}{to}\:\mathrm{1000}\: \\ $$$${is}\:\mathrm{168}\:{prime}\:{number}? \\ $$
Commented by Frix last updated on 01/Aug/23
$$\mathrm{You}\:\mathrm{must}\:\mathrm{count}\:\mathrm{them}\:\mathrm{all}\:\mathrm{or}\:\mathrm{ask}\:\mathrm{someone} \\ $$$$\mathrm{who}\:\mathrm{already}\:\mathrm{has}\:\mathrm{counted}\:\mathrm{them}. \\ $$
Commented by Tinku Tara last updated on 01/Aug/23
$$\mathrm{168}\:\mathrm{is}\:\mathrm{even}\:\mathrm{number}.\:\mathrm{Divisible}\:\mathrm{by}\:\mathrm{2}. \\ $$