00726nam a2200253 a 450000500170000002000180001708200160003510000180005124500500006926000430011930000250016249000400018750000190022760000080024663000160025463000450027063000270031585600060034285600060034896400160035499700130037099900190038395200700040220251203114945.0  a9789814327879  a510.76bHOL  aHolton, Derek  aSecond step to Mathematical Olympiad problems  aHackensack, NJbWorld Scientificc2011  axi, 299p.c24cm.bPB  aMathematical Olympiad series, v. 7.  aIncludes index  bc_  aMathematics  aMathematics -- Problems, exercises, etc.  aCombinatorial analysis  f_  a_  bcdefg_  a216270 C  c204685d204685  00104070aPUbPUd2020-06-22g556.00l0o510.76 HOLp216270yBK