ANSWER: 1,3
Explanation:
The prize is awarded to a researcher from a developing country less than 45 years of age who has conducted outstanding research in a developing country. The Ramanujan Prize for 2015 has been won by mathematician Amalendu Krishna of the Tata Institute of Fundamental Research, Mumbai. Dr. Krishna has been recognised for outstanding contributions in the area of algebraic K-theory, algebraic cycles and the theory of motives.