Question
In the adjoining figure, if the centres of all the
circles are joined by horizontal and vertical lines, then find the number of squares that can be formed.Solution
The figure may be labelled as shown. /RRB_NTPC_MT_7_99.2.JPG)
We shall join the centres of all the circles by horizontal and vertical lines and then label the resulting figure as shown. The simplest squares are ABED, BCFE, DEHG, EFIH, GHKJ and HILK i.e. 6 in number. The squares composed of four simple squares are ACIG and DFLJ i.e. 2 in number. Thus, 6 + 2 = 8 squares will be formed.
What does the following list comprehension produce?
result = [x**2 for x in range(5) if x % 2 == 0]
print(result)
In Python, which of the following functions in the Pandas library is used to merge two DataFrames df1 and df2 on a common column id?
Which of the following is the main characteristic that differentiates random sampling from non-random sampling techniques?
Which of the following is the best approach for presenting data-driven insights to a non-technical audience?
In healthcare, how can trend analysis most effectively enhance patient care?
Which of the following SQL commands is classified as a Data Definition Language (DDL) command?
Which sampling technique is most suitable when a population has distinct subgroups that should be represented proportionally?
Which of the following R functions is most appropriate for fitting a linear regression model?
In the context of metadata for data management, which of the following examples best illustrates descriptive metadata?
Which of the following cryptographic algorithms is an example of symmetric encryption and employs a block cipher with a key size of up to 256 bits?
Relevant for Exams:
