diode is a two terminal device. It allows current to flow only in one direction.
2. Oshkosh did a study of the colors used in African national flags. He found that 38 flags have red, 20 have blue, 13 have both red and blue, and 8 have neither red nor blue. How
a. have red but not blue?
b. have blue but not red?
c. were included in the study?
n(r & b) = 13
n(r+b) = n(r)+n(b)-n(r&b)
= 45 (flags with either red or blue)
total flags(study) = 45 + 8(neither red nor blue) = 53
red not blue = 38-13 = 25
blue not red = 20-13 = 7
reduced by 20%=80%
Try trial and error method for the multiple numbers of 7
you will get a number 119 which should get a remainder 6 when divided by 7,5 when divided by 6,4 when divided by 5,3 when divided by 4,2 when divided by 3,1 when divided by 2,
its a kind of trick question ....as sun can be considered as
a sphere of burning gases and not a circle...so it can be
any direction on the left of person standing in front of the
joy is to sorrow