The colour of sodium lamp is :
ABlue
BYellow
CRed
DWhite
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റോമൻ സംഖ്യാ സമ്പ്രദായത്തിൽ 50 എഴുതുന്നത് എങ്ങനെ ?
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Volume of a hollow cylinder of inner diameter 'd', outer diameter 'D' and height 'h' is: