Jambmaths

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Maths Question
Question 41

The grades of 36 students in a class test are as shown in the pie chart above. How many students have excellent?

Question 42

The bar chart above shows the distribution of marks in a class test. If the pass mark is 5, what percentage of the students failed the test?

Question 43

The mean of seven numbers is 96. If an eight number is added, the mean becomes 112. Find the eighth number.

Question 44

Find the median of 2, 3, 7, 3, 4, 5, 8, 9, 9, 4, 5,3, 4, 2, 4 and 5

Question 45

Find the range of 4, 9, 6, 3, 2, 8, 10 and 11

Question 46

46 Find the standard deviation of 2, 3, 8, 10 and 12

Question 47

Evaluate $^{n+1}{{C}_{n-2}}$ if n = 15

Question 48

In how many ways can the letters of the word TOTALITY be arranged?

Question 49

The probability that a student passes a physics test$\frac{2}{3}$. If he takes three physics test, what is the probability that he passes two of the tests?

Question 50

The probabilities that a man and his wife live for 80 years are $\tfrac{2}{3}$and $\tfrac{3}{5}$respectively. Find the probability that at least one of them will live up to 80 years

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