A sample contains large number of nuclei. The probability that a nucleus in sample will decay after four half lives is

A sample contains a large number of nuclei. The probability that a nucleus in the sample will decay after four half - lives is (a)/(b) where a and b are least positive integers. Value of a+b will be

A sample contains a large number of nuclei. The probability that a nucleus in the sample will decay after four half - lives is (a)/(b) where a and b are least positive integers. Value of a+b will be

_(87)^(221) Ra is a radioactive substance having half life of 4 days .Find the probability that a nucleus undergoes decay after two half lives

What per cent of orginal radioactive sample decays after four half lvies

What fraction of a radioactive sample decay after three half lives?

Given a sample of radius -226 having half-life of 4 days. Find, the probability, a nucleus disintegrates after 2 half lifes.

Given a sample of radius -226 having half-life of 4 days. Find, the probability, a nucleus disintegrates after 2 half lifes.