Question
There are three classes P, Q and R. The average marks of
class P is 75. The average marks of class Q is 80. The average marks of class R is 85. The average marks of class P and Q is 77, the average marks of class Q and R is83. Find the approximate average marks of three classes.Solution
By allegation method: 
So the ratio of students in class P to Q comes out to 3 : 2 & the ratio of students in class Q to Ris 2 : 3. Ratio of students in P, Q and R = 3 :2 : 3 So, average of all the classes = `(75xx3 + 80 xx2 + 85xx3)/(3+2+3)` = `(225+160+255)/8` = 80
Which data analytics technique is suitable for handling missing data points in a dataset?
The dynamic memory allocation is the memory allocation done at the _________.
Which of these can be overloaded?
Which of the following is a valid token in lexical analysis?
What does a "Shared Lock" in a DBMS locking protocol allow?
Consider a 4-way set associative cache consisting of 128 lines with a line size of 64 words. The CPU generates a 20-bit address of a word in main memor...
In dynamic programming, what is memoization?
What is the minimum no. of variables/ features required to perform clustering?
What is the basic component of an electronic circuit that restricts the flow of current?
When designing a sequential circuit, what is the purpose of flip-flops or latches?
Relevant for Exams:
