Let Z = {1, 11, 111, 1111, ..., 11111 up to 55 times} and T be a subset of Z such that the sum of no two elements of T is divisible by 3. The maximum possible number of elements in T is
3 pipes A, B and C are connected to a tank. A and B can fill it in 20, 30 mints resp and C can empty it in 15 mints. If A, B and C are kept open successively fr 1 mint each, how soon will the tank b filled? Pz explain
Please give me link for pagal guy android app if any ?
Hi guys
Is it too late to start preparing for cat 2015 from scratch targeting good percentile ?
DI-LR Thread for 15 ka link ?
how many four digit numbers divisible by 4 can be formed
using digits 1,2,3,4,5,6,7,0 where repetition is not allowed
Any thread for GK???
Data sufficiency queation. Is A positive ? 1) x^2-2x+A is positive for all x 2) Ax^2+1 is positove for all x
2 players X and Y play a game of coins. Any player can pick 2,3,4,5,6 coin in his chance.The players who picks the last coin always wins. If per chance there remain one coin, the match results in a draw. If there are 70 coins in all and X starts the game, how much he should pick to ensure a win always?
OPTIONS-
1) 6
2) 2
3) 4
4) He will never win.
P.S- Please explain the logic
sum of reciprocals of all factors of 480?
Lets say there are numbers from 1,2,3.... 30 in a box. You need to find the probability of picking two odd number from the box one after another without replacement
The sum 3/2 + 5/4 + 9/8 + 17/16 + ..... upto 99 terms is..
A thief escaped from jail and started running at a speed of 10 kmph. Half an hr later the police started chasing him. If the police brought him back to jail in exactly one hr from the moment they started chasing him, then find the distance run by the thief before he was caught.
An equilateral triangle of side 12 cm was divided into 2 parts such that one part is quadrilateral and another is equilateral triangle. If the area of the quadrilateral is 3/4th of the original triangle and two of its side are parallel to each other then what is the altitude of smaller triangle?
At a certain instance the minute hand of a clock is 90 degree behind the hr hand, when considered in clockwise direction. After how much time will the minute hand be 180 degree ahead of the hour hand for the first time?