A radioactive isotope has h half-life of 2 yr. how long will itt take the activity to reduce to 3% of its original value

A radio active isotope has a half-life of T years. How long will it take the activity to reduce to 1% of its original value ?

A radioactive isotope has a half-life of T years. How long will it take the activity o reduce to 3.125% its original value?

A radioactive isotope has a half-life of T years. How long will it take the activity to reduce to - 1% of its original value?

a radioactive isotope has a half life of T years. how long will it take the activity to reduce 1% of its original value.

A radioactive isotope has a half life of T years : How long will it take the activity to reduce to 1%of its original value?

A radioactive isotope has a half life of 5 yrs. How long will it take the activity to reduce to 3.125% ?