Virus envelope is known as

A naked RNA particle causing the symptoms like that of a virus disease is known as

A naked RNA particle causing the symptoms like that of a virus disease is known as Option 1 Viroid Option 2 Virion Option 3 Virus Option 4 Prion

Virus attacking blue-green algae is known as

Virus attacking blue-green algae is known as

Virus attacking blue-green algae is known as

The gaseous envelope aroundthe earth is known as atmosphere. The lowest layer of this is extended upto 10 km from sea level, this layer is

A box contains 40 envelopes of which 25 are ordinary (not meant for air mail ) and 16 are unstamped, while the number of unstamped ordinary envelopes is 10. What is the probability that an envelope chosen from the box is a stamped air mail envelope?

There are n letters and n corresponding envelopes. In how many ways the letters can be placed in the enveloped (one letters in each envelope) so that no letter is put in the right envelop.