The rupee gained 4 paise to 81.75 against the US dollar in early trade on Friday tracking a weak American currency and foreign fund inflows.

Forex traders said the rupee is trading in a narrow range as the support from crude oil prices below USD 80 a barrel was negated by muted domestic equities.
At the interbank foreign exchange, the domestic unit opened at 81.77 against the dollar and then rose to 81.75, registering a rise of 4 paise over its previous close.
On Thursday, the rupee closed at 81.79 against the US currency.