The heights of 5 boys in a group are 152 cm, 170 cm, 156 cm, 164 cm and 158 cm. Find their mean height.
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The mean of five numbers is 27. If one of the numbers is excluded, the mean becomes 25. Determine the excluded number.
Find the median of 1.2, 1.8, 2.3, 2.7, 3.1, 3.7, 4.0 and 4.5.
The weights of eight students are 32 kg, 25 kg, 30 kg, 25 kg 26 kg, 26 kg, 25 kg and 26 kg. Find their modal weight
The graph shows the number of students from different cities who passed and that who failed in an entrance exam.
What is the ratio of the number of students passing in the entrance exam from city B to those passing from city E?
From 1 to 50, find the probability of getting a multiple of 6.
In a family of two children. Find the probability of at least one girl child.
Two dice are thrown simultaneously. Find the probability of getting an even number as the sum.
A class has 40 students, 25 boys, and 15 girls. A student of the class is selected at random as the monitor. Find the probability of selecting a girl student as the monitor.