Let‟s cram a few things#!#Part-1

Rohit, an EVS teacher says few things regarding discussion session among the things told. Which is incorrect?

Identify the segment in the sentence which contains the grammatical error. Deepak said he would pack few things he had and vacate the hostel room the next day (a)Deepak said he would pack (b)and vacate the hostel room (c)pack few things he had (d)the next day

In the following question, out of the four alternatives, select the alternative which best expresses the meaning of the idiom/phrase. A bone of contention (a)The only part to which two arguing parties agree. (b)An issue over which there is continuing disagreement. (c)A very expensive inherited property. (d)To be happy with only a few things.

If the number of arrangements of (n-1) things taken from n different things is k xx the number of arrangements of (n-1) things taken from n things in which two things are identical then the value of k is

The total number of selections of atleast one thing at most r things from (2r+1) different things is 255. Then the value of r is

Notation + theorem :- Let r and n be the positive integers such that 1<=r<=n. Then no.of all permutations of n distinct things taken r at a time is given by (n)(n-1)(n-2)....(n-(r-1))