a. 2.718... between 2 and 3 2 = √4 and 3 = √9 So, 2.718... between √4 and √9        [√4 < e < √9] b. π = 3.1415... 3.1415... between 3 and 4 3 = √9 and 4 = √16 So, 3.1415... between √9 and √16       [√4 < π < √9]