Numbers of electrons in solar flares as deduced from microwave and x-ray bursts

We discuss whether the numbers of x-ray and radio-produced electrons in solar flares are the same. The number of radio-produced electrons that is estimated with an inhomogeneous source increases by a factor of 10(3)-10(4) because of the inhomogeneity and the decreased magnetic field (B = 120 G) of the radio source. The number of x-ray-produced electrons decreases by a factor of 10-30 due to the increase of the number density of ions (3 x 10(10) cm(-3)). These are the reasons why the number of radio-produced electrons is approximately equal to that of x-ray-produced electrons in the 1981 April 27 burst.