Mosquitoes pose a threat to human health. Controlling mosquitoes using chemicals may have undesired consequences. In Florida, authorities have used genetically modified mosquitoes to control the overall mosquito population. It remains to be seen if this novel approach has unforeseen consequences.
Which one of the following is the correct logical inference based on the information in the above passage?
In a class of five students P, Q, R, S and T, only one student is known to have copied in the exam. The disciplinary committee has investigated the situation and recorded the statements from the students as given below.
Statement of P : R has copied in the exam.
Statement of Q : S has copied in the exam.
Statement of R : P did not copy in this exam.
Statement of S : Only one of us is telling the truth.
Statement of T : R is telling the truth.
The investigating team had authentic information that S never lies. Based on the information given above, the person who has copied in the exam is
The least number of squares that must be added so that the line P-Q becomes the line of symmetry is ______
Which one of the following options maintains a similar logical relation in the above sentence?