In a survey of students, it was found that 50% of them like English, 60% like Maths and 40% like Science. If 20% like Maths and English, 15% like English and Science, 25% like Maths
and Science and 5% like all three subjects,
(1) What percentage of students like only two subjects ?
What percentage of students don't like any subject ?

Needmax recorded the heights of 500 male humans. he found that the heights were normally distributed around a mean of 177 centimeters. which statements about max’s data must be true? a) the median of max’s data is 250 b) more than half of the data points max recorded were 177 centimeters. c) a data point chosen at random is as likely to be above the mean as it is to be below the mean. d) every height within three standard deviations of the mean is equally likely to be chosen if a data point is selected at random.