Explanation : 'No red is black' is equivalent to
'No black is red' and this is equivalent to
'Red is not black'.
'All red are black' is negative proposition.
Hence, only conclusion (i) and (iv) are correct.
Explanation : Audio is transmitted on frequency modulation.
Advertising is non personal communication as
the advertiser and receivers are not face to face.
Internet requires bandwidth of frequency to
Newspaper involves linear communication
from sender to the masses with no or delayed
Explanation : Mass media do not have pre-determined
functions for all, which means audiences are
active and free to receive the messages in
their individual environments and capacities.
They vary in the use of their senses to perceive
and interpret the messages.
Explanation : Sum of scores of all 35 raw scores
=35 x 18 = 630
Sum of scores of first seventeen
=17 x 14 = 238
Sum of scores of last seventeen
=17 x 20=340
Hence, eighteenth raw score
= -238 - 340 + 630 = 52