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The Topix index added 4.23 points, or 0.49 percent, to 873.61. Analysts said trading would likely be rangebound ahead of March US jobs data due later Friday as markets continue to assess the impact of quake and tsunami damage on corporations striving to restore crippled supply chains.
"Investors will watch carefully upcoming US jobs data and the impact of the ongoing nuclear crisis and rolling blackouts on Japanese corporate earnings," said Kazuhiro Takahashi, general manager at the investment strategy and research department of Daiwa Securities. The yen was at 83.44 to the dollar from 83.20 in New York overnight as the greenback continued its recent ascent.
The Japanese unit was at 118.18 to the euro from 117.11