By what least number should 648 be multiplied to get a perfect cube?

By what least number should 324 be multiplied to get a perfect cube?

By what least number should 1536 be multiplied to get a perfect cube?

By what least number should 9720 be multiplied to get a perfect cube?

By what least number should 3675 be multiplies to get a perfect square number ? Also. Find the number whose square is the new number.

By what number should 6 2/9 be multiplied to get 40?

By what number should 9 4/5 be multiplied to get 42?

By what least number should 6300 be divided to get a perfect square number ? Find the number whose square is the new number.

By what number should 2/13 be multiplied to get -1

By what least number should 675 be multiplied so as to obtain a perfect cube number ?