Casio fx-991MS PLUS Scientific Calculator with 2-Line Display<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>2-line display</li><li>Fraction calculations</li><li>Integration calculations</li><li>Combination and Permutation</li><li>STAT-data editor， Standard deviation， Normal distribution calculations， Regression analysis</li></ul></div><img src="http://ecx.images-amazon.com/images/I/51Kvz-skwVL.jpg" noproxy>