Question
Ecology was first described as a separate field of
knowledge in _______ by the German zoologist, Ernst Haeckel.Solution
The correct answer is A
Ram, Shyam, Rohan, Reeta, and Mukesh are five members of a family who are weighed consecutively, and their average weight is calculated after each membe...
In a school, the average number of books that some numbers of boys have is 120 and average number of books that some numbers of girls have is 85. If eac...
In a factory, the average salary of all employees is Rs. 5600 and the average salary of 24 supervisor is 7200. If the average salary of labours is 4800,...
A number is such that when it is multiplied by 4, it gives another number which is as much above from 180 as the original number (itself) is below 180. ...
Sum of ages of 65 students is 1300 years. The average age of 25 of them is 16 years and the average age of another 20 of them is 14 years. Find the ave...
- The average speed of 20 vehicles during a survey was noted as 60 km/h. Later it was observed that one speed was wrongly taken as 72 km/h instead of 62 km/h...
There are 15 numbers such that average of first 12 numbers is 25 while the average of last five numbers is 44. Find the 12th number, if the ratio betwee...
The average weight of five friends A, B, C, D and E is (x+5) years while the average weight of C and E is (x-5) kg. If the weight of another person F is...
Average run scored by a batsman in first ‘x’ matches is 41. In next 12 matches he scored runs with an average of 61 so that his overall average incr...
The average age of A and B is 22 years. If A is to be replaced by C, the average would be 21 years. The average age of C and A is 23 years. Find the age...
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