Question
The probability of selecting a rotten egg randomly from
a basket of 1050 eggs is 0.36. What is the number of rotten eggs in the basket?Solution
Total number of eggs in the basket = n(S) = 1050 Let E be the event of selecting a rotten egg from the basket. Number of outcomes favourable to E = n(E) P(E) = n(E)/n(S) 0.36 = n(E)/1050 ⇒ n(E) = 1050 × 0.36 ⇒ n(E) = 378 Therefore, the number of rotten eggs in the basket = 378
Find the third proportional to 16 and 48?
The total number of students in a school is 20100. If the ratio of boys to the girls in the school is 63:71 respectively, then find the total number of ...
The total number of students in a school is 20020. If the ratio of boys to the girls in the school is 73:81 respectively, then find the total number of ...
In an office, the ratio of the number of males to number of females is 13:9. If 3 males joined the class and 7 females left the class, then the ratio of...
The ratio between two numbers is 3:4. If each number is increased by 8, the ratio between then become 5:6, find the difference between numbers.
Consider two positive numbers that have a ratio of 5:7. If the combined total of their squares equals 1184, determine the sum of these two numbers.
A bag contains 1 rupee, 50-paise, and 25-paise coins in the ratio 5 : 6 : 8. If the total amount is Rs. 240, find the number of 25-paise coins.
- If ‘A’, ‘B’ and ‘C’ are in proportion in the given order while ‘A’ = 18 and ‘B’ = 54, then find the value of ‘C’.
An integer 'p' is added to each of 7, 15, 27 and 45 so that the resulting numbers will be in proportion in given order only. Find the value of '(p + 4)'.
Three numbers ‘A’, ‘B’ and ‘C’ are such that ‘A’ is half of ‘B’ and ‘C’ is equal to average of ‘A’ and ‘B’. If sum of th...