MUMBAI, Oct 7: The rupee fell 4 paise to close at 88.78 (provisional) against the US dollar on Tuesday, weighed down by a strong American currency overseas and unabated foreign capital outflows. The domestic currency traded in a tight range as investors preferred to remain on the sidelines amid uncertainties over global trade, forex traders said. At the interbank foreign exchange market, the rupee opened with a marginal gain at 88.72 against the US dollar and touched the intra-day low of 88.79 and a high of 88.79 before ending the session at 88.78 (provisional), registering a loss of 4 paise from its previous closing level. On Monday, the rupee gained 5 paise to settle at 88.74 against the US dollar. Investors moved cautiously after the US Senate once again rejected both Democra

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