In a maThematic there are 1,2,3,....9 cities  and each number corresponds to a city. Now an airflight route is to be established between two cities such that the numeral formed is divisible by 3. (eg. if 1 and 2 are connected then it satisfies the condition). Find out the number of cities which are connected to city 8, either directly or indirectly.

5 cities 

There are 100 bulbs and 100 switches.Each switch is numbered from 1 to 100 and each switch corresponds to each bulb. (a)all switches are switched on. (b)the switch nnumberes which are divisible by 2 are marked and those switches which are on are put off and which are off are put on. (c)the switch  numbers which are divisible by 3 are marked and those switches which are on are put off and which are off are put on. (d)this process continued till the number 100. By the end

10(1,4,9,16,25,36,49,64,81,100) 

There are five letters A,B,C,D,E .Each represents a different number. (a) product of AB and CD is EEE. (b) if AB is subtracted from the product E and CD then CC is result.Now what is the code which represents the product of AB and D.

Latest Answer : 1,1,1,1-> 10*9*8*7/4= 12601,1,2   -> 10*9*8/2   =3601,3      ->10*9      =902,2      ->10*9/2   =454         ...

The members of a certain tribe are divided into three castes Abhor, Dravid, and Magar castes.An Abhor woman cannot marry a dravid man.A magar man cannot marry a Dravid woman.A son takes the caste of his father, a daugher takes the caste of her moher.all marriages except those mentioned above are permitted.There are no children born out of wed lock. Questions:1) An abhor woman marries and has the children, all of whom are members of the abhor caste. Which of the folloing must be true?i)  

Both guptha and sinhas have two young sons whose ages are under eleven. the names of the boys, whose ages round off to the nearest year are all different, are rajesh , praveen, lalitm and pratap. Taking the ages of the boys only to the nearest year, the following statements are true.Rajesh is three years younger than his brother isPraveen is the oldest.Lalit is half as old as one of the gupta boys.Pratap is five years older than the younger sinha boy.The total ages of the boys in each family differ

Three friends divided some bullets equally. After all of them shot 4 bullets the total no. of remaining bullets is equal to that of one has after division. Find the original number divided.

x x x x-4 x-4 x-4 3x-12 = x x= 6 answer is 18  

A ship went on a voyage after 180 miles a plane started with 10 times speed that of the ship. Find the distance when they meet from starting point.

180 + (x/10) = x x = 20 answer is 180+20=200miles.  

There are 3 societies a, b, and c. A lent tractors to B and C as many as they had. After some time B gave as many tractors to A and C as many as they have. After sometime c did the same thing. At the end of this transaction each one of them had 24. Find the tractors each originally had.

A had 39, B had 21, C had 12,  

There N stations on a railroad. After adding x stations 46 additional tickets have to be printed. Find N and X.

let N(N-1) = t; (N+x)(N+x-1) = t+46; trail and error method x=2 and N=11