Question
What is an excretory organ of the
cockroach?Solution
Malpighian tubules are the excretory organs of cockroaches, involved in removing waste products from the body.
The batting average for 27 innings of a cricket player is 47 runs. His highest score in an innings exceeds his lowest score by 157 runs. If these two i...
In an examination, the average marks obtained by the students is 75. After correcting the quantitative mistakes, the average of 100 students is reduced ...
The average age of three children is 24 years. If their ages are in the ratio 5:6:7. Find the age of the youngest child.
The average of 10 numbers is 42. If the average of the first 4 numbers is 24 and the average of the last three numbers is 36, then what is the average o...
- The average of the first three numbers is twice the average of the next six numbers. If the average of all nine numbers is 20, then find the sum of the las...
The average weight of 28 students in a class is 40 kg while the average weight of 5 teachers who teach them is 58 kg. 10 students and 1 teacher go for a...
- The mean of 60 numbers is 105. Calculate the new mean if all numbers are multiplied by 4.
The average weight of 4 persons is 56 kg. The heaviest person’s weight is 30 kg more than the lightest person’s weight. If the average weight of the...
The average age of three children is 16 years. If their ages are in the ratio 1:3:4. Find the age of the youngest child.
- The average of three numbers is 60. When three more numbers are included, the average increases by 6. Find the average of the numbers included.
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