The dollar index, which tracks the greenback against six major rivals, rose 0.16 percent to 90.541, snapping a four-day losing stream, on Thursday as some European Central Bank officials voiced worries about the currency's strength. The euro was down 0.61 percent to 1.2184 against the greenback. Against the yen, the dollar edged up 0.76 percent at 111.28. The euro is expected to meet resistance and support against the dollar at $1.2340 and $1.2030 respectively, while the dollar is expected to meet resistance and support against the yen at 112.70 and 109.70 respectively.

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