Question
In how many ways 6 novels and 7 notebooks can be
arranged in a row so that they are alternate?Solution
Reqd. no. of ways = 6! × 7!
If ‘A’, ‘B’ and ‘C’ are in proportion in the given order while ‘A’ = 27 and ‘B’ = 63, then find the value of ‘C’.
...Find the third proportion to 16 and 24.
A bag contains Re 1 and 50 paise coins in the ratio 2 : 3. While the ratio of 50 paise and 25 paise is 4:5. If the total value of these coins is Rs 177....
Rs.1581 is divided among A, B and C in the ratio 10 : 15 : 6. What is the share of B?
The ratio of speeds of A and B is 3:4 and A takes 15 minutes more than B to reach the destination, how many hours will Be to reach the same place?
The ratio of A’s age to B’s age is 5:7, and the sum of their ages after 6 years is 72 years. Find the present age of A.
The number of students in class IX and class X is 70 and 75, respectively. The ratio of the number of boys to girls in classes IX and X is 9: 5 and 8: 7...
A bag contains coins of Rs 1, 50p, and 25p and the ratio of the number of coins is 6:15:16. If the total value of all the coins is Rs 1050 then what wil...
The ratio of investment of A and B is 2 : 5 and that of B and C is 3 : 7. Find the investment of B if sum of investment of A, B and C is Rs. 33600.
The ratio of the two numbers is 4:9. 140% of the first number is equal to the 70% of the second number. Find the sum of both the numbers.
Relevant for Exams:
