Question
Among the following insect groups, which one completely
lacks chewing mouthparts, being specialized for fluid feeding?Solution
Fleas (Siphonaptera) lack chewing mouthparts and instead have piercing-sucking structures used for extracting blood from hosts. Others like beetles and bees possess modified chewing mouthparts.
30 students go for a picnic. 15 of them spent Rs. 64 each on their food and rest spent Rs.5 more than the average expenditure of all 30. What was the to...
In a school with 400 students, the average of the age of the boys is 16 years and that of the girls is 12 years. If the average age of the school is 14 ...
Average of four numbers is 21. Sum of smallest and largest number is 53. If difference between other two numbers is 1, then find the square of second sm...
A cricketer had a batting average of x runs in the first 18 matches. In the next 6 matches, he scored an average of 60 runs. His overall average increas...
The average of 75 percent of x and 48 percent of y is 90. What will be the average of 125 percent of x and 80 percent of y?
- What is the average of the squares of the first 25 natural numbers?
In an examination, the average marks obtained by the students is 40. After correcting the quantitative mistakes, the average of 50 students is reduced t...
The combined average number of pens with persons ‘B’ and ‘C’ is 75% of the combined average number of pens with persons ‘A’ and ‘D’. The...
Average run scored by a batsman in first ‘x’ matches is 20. In next 5 matches he scored runs with an average of 60 so that his overall average incre...
The average age of husband, wife and their child 4 years ago was 26 years and that of wife and the child 5 years ago was 25 years. The present age of th...
