172 (b) 172

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180 72 X to 2 alpha to bita to gamma to AZ X ‘ . Z and A are (a) 69, 172 (b) 172 , 69 (c) 180 , 70 (d) 182, 68

Feb

180 72 X to 2 alpha to bita to gamma to AZ X ‘ . Z and A are (a) 69, 172 (b) 172 , 69 (c) 180 , 70 (d) 182, 68 172 (b) 172 180 72 X to 2 alpha to bita to gamma to AZ X ' . Z and A are [...]

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