118. 6^n/6^-2 = 6^3

139. A half-life is the amount of time that it takes for a radioactive substance to decay to one half of its original quantity. Suppose radioactive decay causes 300 grams of a substance to decrease to 300 × 2^–3 grams after 3 half-lives. Evaluate 300 × 2^–3 to determine how many grams of the substance [...]

138. About 230 billion litres of water flows through a river each day. How many litres of water flows through that river in a week? How many litres of water flows through the river in an year? Write your answer in standard notation. 118. 6^n/6^-2 = 6^3 August 1, 2021 Category: Chapter 12 - Exponents [...]

137. While studying her family’s history. Shikha discovers records of ancestors 12 generations back. She wonders how many ancestors she has had in the past 12 generations. She starts to make a diagram to help her figure this out. The diagram soon becomes very complex. 118. 6^n/6^-2 = 6^3 August 1, 2021 Category: Chapter 12 [...]

118. 6^n/6^-2 = 6^3 118. 6^n/6^-2 = 6^3 August 1, 2021 Category: Chapter 12 - Exponents and Powers , Maths , NCERT Class 8 ,