t is fun to solve problem, and is solving problem about something a good way to learn something? The answers seem to be yes, provided the problems are neither too hard nor too easy. The book is addressed to students ( and teachers) off. | UNIVERSAL LIBRARY OU 164431 UNIVERSAL OVP- -875- 2-12-66 . OSMANIA UNIVERSITY LIBRARY Gall No. Accession No. W54- Author Fe U . L . Title Atyebva . td. .d i960 This book should be returned on or before the date last marked .