Required number of ways = (6C2 ) × 7C1 × 9C1 => (15 × 7 × 9) + (6 × 21 × 9) + (6 × 7 × 36) => 945 + 1134 + 1512 = 3591
The average of five even numbers is 66. If we replace two of these even numbers, 84 and 92, with a single even number X, the new average decreases by 4....
The average weight of a group of 20 boys is 52 kg. If the total weight of a group of 14 girls is 30% less than the total weight o...
Find the average of the following set scores. 450, 1050, 12, 390, 143, 286, 550, 999
There are five containers in a truck hold. The weight of the first container is 100 kg and the weight of the second container is 20% higher than the wei...
Average of 8 numbers is 70. If average of first four and last two numbers is 80 and 45, respectively then find the fifth number given that ratio of fift...
The average of five even numbers is 68. If we replace two of these even numbers, 84 and 92, with a single even number X, the new average decreases by 4....
The average of 41 consecutive odd numbers is 49. What is the largest number.
The average age of 32 children and their teacher's age are 28 years. If the teacher's age is excluded, the average reduces by 1. What is the teacher's age?
Average weight of 12 nurses is 32 kg. If the weight of one more nurse is included, then average weight is increased by 2 kg. Find the weight of the newl...
Average age of 25 students is 15 years. If 5 students leave the class, the average age decreases by 1 year. Find the average age of the students who lef...
