Question
In the standard normal distribution (mean = 0, standard
deviation = 1), what is the probability that a random variable falls within one standard deviation of the mean?Solution
68%
- If ‘A’, ‘B’ and ‘C’ are in proportion in the given order while ‘A’ = 20 and ‘B’ = 40, then find the value of ‘C’.
- A total of Rs. ‘K’ was to be distributed among Ravi, Raju, and Rina in ratio of 5:6:7 respectively but due to some error the money was falsely distribu...
Three numbers are in the ratio 3:5:6. If the sum of their squares is 630, then the numbers are:
The ratio of the two numbers is 4:11. 120% of the first number is equal to the 70% of the second number. Find the sum of both the numbers.
An integer 'p' is added to each of 8, 14, 30 and 40 so that the resulting numbers will be in proportion in given order only. Find the value of '(p + 4)'.
Two numbers are in the ratio 6:5. After adding 3 and 5 to them respectively the ratio becomes 2:3. Find the bigger number.
- Find the fourth proportion of (k + 3), (2k - 6), and (4k - 9). (Note: 'k' is the smallest two-digit prime number.)
The ratio of two numbers is 4:9. If each number is decreased by 4, the ratio becomes 3:7. Find the smaller numbers.
Ratio of monthly income to monthly expenditure of A is 11:9, respectively and monthly savings of A is Rs. 2880. Find the monthly income of A.
A sum is distributed among A, B and C is the ratio 8: 4: 3 and A divides its part between D and E in the ratio 9: 7, then what is the ratio of part of C...
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