1. how did advancements during the gupta period transform mathematics? a. they invented algebra. b. they created the concepts of square numbers and square roots. c. they developed a decimal system with a numeral for zero. d. they made progress in metallurgy. 2. under whose reign did the gupta empire reach its greatest size? a. chandragupta maurya b. chandra gupta i c. samudra gupta d. chandra gupta ii 3. which game was invented in india? a. solitaire b. mahjongg c. chess d. checkers