00484nam a22001457a 450000500170000001000150001702000240003203500130005603700130006908200080008224501050009026000750019527000420027030000260031220100814115228.0  aENG-100374  a978817450968c95.00  aEN-83906  bDBAD/PUB  a510  aMathematics :bexemplar problems class X /cby National Council of Educational Research and Training  aNew DelhibNational Council of Educational Research and Trainingc2009  aSri Aurobindo MargbNew Delhie110016  axiv,236p.c24cm (pbk)