Mathematics 153 Calculus 47 Physics 47 Language 38 English language 36 Statistics 34 Linguistics 33 Computer science 31 History 31 Philosophy 31 Abstract algebra-- Mathematics 28 Algebra 27 Mathematical analysis 27 Probabilities 27 Functional analysis 23 Economics 22 Differential equations 21 Psychology 21 Analysis-- Mathematics 20 Differential equations-- Analysis-- Mathematics 20 Education 20 Immunology 19 Biochemistry 18 Biology 18 Mathematical statistics 18 Topology-- Mathematics 18 Functional analysis-- Mathematics 17 Statistics for business management--Quantitative and qualitative techniques 17 Geometry 16 R (Computer program language) 16