# Permutation & Combination

Are you preparing for campus placements,Banking,SSC, IAS, Insurance,Defence and other competitive exams? Then, make sure to take some time in practicing the Permutation & Combination questions and answer in Quantitative Aptitude. Moreover, only those questions are included that are relevant and likely to be asked in any competitive exam. So, take these questions and answer, brush up your skills and practice to stay fully prepared for any your exam.

• Q36.There are 12 districts grouped into four areas with districts per area. It is intended to connect the districts with cable lines such that every two districts are connected with three direct lines if they belong to the same zone, and with only one direct line otherwise. How many direct cable lines are required?

• Q37.In the below figure, the straight lines represent one way path where travel is allowed from northwards or westwards only. From how many distinct routes can a vehicle reach point B from point A?

• Q38.What can be the maximum number of points of intersection of 5 straight lines?

• Q39.How many two digit numbers are there whose squares has the same number at the units place as in the original number?

• Q40.Ramu travels at the speed of X km/hr for the first half of the time and at Y km/hr for the other half of the time. His average speed over the entire journey is: