Graylin, Chua, Graylin and Johnson stand with Buffett at the Marriott Hotel in Omaha

Krystal Graylin, Kei Chua Allyson Graylin (the group winners) and Jake Johnson(the individual winner) stand with Warren Buffett at the Marriott Hotel in Omaha, Nebraska, in this undated handout photo courtesy of Eric Francis photography. REUTERS/Eric Francis photography/Handout via Reuters (UNITED STATES – Tags: BUSINESS EDUCATION) ATTENTION EDITORS – THIS IMAGE HAS BEEN SUPPLIED BY A THIRD PARTY. IT IS DISTRIBUTED, EXACTLY AS RECEIVED BY REUTERS, AS A SERVICE TO CLIENTS. NO SALES. NO ARCHIVES. FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS