Could this problem be correct? if a,b,c,d and p are different real numbers such that (a2+ b2+c2)p2 -2(ab+bc+cd) p +(b2+c2+d2) ≤ 0 then a,b,c and d are in geometric progession ...

2 frnds after a long time decided to meet at a particular coffee shop between 5:00 pm to 6:00 pm on a specified day.they also decided that the person whho comes earlier will not wait for the second person for more than 10mins ...

How many ways can the letters of the word 'computer' be arranged so that vowels occupy the even positions? In how many ways can you put 9 coins of different values into 2 pockets my cousin in engg college give me th ...