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  • Brain teasers logical and aptitude question for interview

    Please try to solve the question and post answer so that it can be compared with the answers of other readers

    logical & Aptitude Question
    Source: http://www.newinterviewquestions.com/

    Q1.You, along with your mother & wife are siting in a ship. suddenly a danger occurs and you are forced to throw either mother or wife. you cannot jump down. whom would you throw & why? none of the two, know how to swim ?

    Q2: This is the question asked in an interview

    There are 3 persons A,B,C standing in a queue and all are facing in one direction. C can see A and B ; B can see A ; A can not see any one. There are 3 white caps and 2 Black caps in a box. Only 3 caps are picked up randomly and wore by A,B and C.

    After wearing the cap all are asked which cap they are wearing.

    C says Not sure
    B says Not sure
    A says sure and the cap colour

    How A says the exact colour of the cap which he is wearing.

    Q3
    if a boy travels 5km at 30kmph and 6km at 24kmph what is its avg speed?

    Q4
    A BUS RUN AT 100KM/HR TOP SPEED. IT CAN CARRY A MAXIMUM OF 6 PERSONS. IF SPEED OF BUS DECREASES IN FIXED PROPORTION WITH INCREASE IN NUMBER OF PERSON , FIND SPEED WTHEN THREE PERSON ARE TRAVELLING IN BUS

    Q5
    A cable, 16 meters in length, hangs between two pillars that are both 15 meters high. The ends of the cable are attached to the tops of the pillars. At its lowest point, the cable hangs 7 meters above the ground. How far are the two pillars apart?

    Q6
    Here is a sequence of numbers: 1 11 21 1211 111221 It seems to be a strange sequence, but yet there is a system behind it… What is the next term in this sequence?

    Q7
    The legendary king Midas possessed a huge amount of gold. He hid this treasure carefully: in a building consisting of a number of rooms. In each room there were a number of boxes; this number was equal to the number of rooms in the building. Each box contained a number of golden coins that equaled the number of boxes per room. When the king died, one box was given to the royal barber. The remainder of the coins had to be divided fairly between his six sons. Is a fair division possible in all situations?

    Q8
    This is a most unusual paragraph. How quickly can you find out what is so unusual about it? It looks so ordinary that you would think that nothing is wrong with it at all, and, in fact, nothing is. But it is unusual. Why? If you study it and think about it, you may find out, but I am not going to assist you in any way. You must do it without any hints or coaching. No doubt, if you work at it for a bit, it will dawn on you. Who knows? Go to work and try your skill. Good luck! What is unusual about the above paragraph?

    Q9
    Below are a number of statements: 1. Precisely one of these statements is untrue. 2. Precisely two of these statements are untrue. 3. Precisely three of these statements are untrue. 4. Precisely four of these statements are untrue. 5. Precisely five of these statements are untrue. 6. Precisely six of these statements are untrue. 7. Precisely seven of these statements are untrue. 8. Precisely eight of these statements are untrue. 9. Precisely nine of these statements are untrue. 10. Precisely ten of these statements are untrue. Which of these statements is true?

    Q10
    Three salesmen went into a hotel to rent a room. The manager stated that he had only one room left, but all three could use it for $30.00 for the night. The three salesmen gave him $10.00 each and went up to their room. Later, the manager decided that he had charged the salesmen too much so he called the bellhop over, gave him five one-dollar bills, and said: ‘Take this $5.00 up to the salesmen and tell them I had charged them too much for the room’. On the way up, the bellhop knew that he could not divide the five one-dollar bills equally so he put two of the one-dollar bills in his pocket and returned one one-dollar bill to each of the salesmen. This means that each salesman paid $9.00 for the room. The bellhop kept $2.00. Three times nine is 27 plus two is 29……. What happened to the extra dollar?

    Q11
    A man decides to buy a nice horse. He pays $60 for it, and he is very content with the strong animal. After a year, the value of the horse has increased to $70 and he decides to sell the horse. But already a few days later he regrets his decision to sell the beautiful horse, and he buys it again. Unfortunately he has to pay $80 to get it back, so he loses $10. After another year of owning the horse, he finally decides to sell the horse for $90. What is the overall profit the man makes?

    Q12
    Joyce has bought ten trees for her garden. She wants to plant these trees in five rows, with four trees in each row. The Question :How must Joyce plant the trees?

    Q13
    Using the ciphers 1 up to 9, three numbers (of three ciphers each) can be formed, such that the second number is twice the first number, and the third number is three times the first number. Which are these three numbers?

    Q13
    Julius and Vincent are brothers. “We are born within the same hour,” says Julius, “on the same day of the same year.” “But,” says Vincent, “we are no twins!” How is this possible?

    Q14
    In Miss Miranda’s class are eleven children. Miss Miranda has a bowl with eleven apples. Miss Miranda wants to divide the eleven apples among the children of her class, in such a way that each child in the end has an apple and one apple remains in the bowl. Can you help Miss Miranda?

    Q15
    Hans is standing behind Gerrie and at the same time Gerrie is standing behind Hans. How is this possible

    Q16
    A snail is at the bottom of a 20 meters deep pit. Every day the snail climbs 5 meters upwards, but at night it slides 4 meters back downwards. How many days does it take before the snail reaches the top of the pit?

    Q17
    You walk upwards on an escalator, with a speed of 1 step per second. After 50 steps you are at the end. You turn around and run downwards with a speed of 5 steps per second. After 125 steps you are back at the beginning of the escalator. How many steps do you need if the escalator stands still?

    Q18
    On a sunny morning, a greengrocer places 200 kilograms of cucumbers in cases in front of his shop. At that moment, the cucumbers are 99% water. In the afternoon, it turns out that it is the hottest day of the year, and as a result, the cucumbers dry out a little bit. At the end of the day, the greengrocer has not sold a single cucumber, and the cucumbers are only 98% water. How many kilograms of cucumbers has the greengrocer left at the end of the day?

    Q19
    Greengrocer C. Carrot wants to expose his oranges neatly for sale. Doing this he discovers that one orange is left over when he places them in groups of three. The same happens if he tries to place them in groups of 5, 7, or 9 oranges. Only when he makes groups of 11 oranges, it fits exactly. How many oranges does the greengrocer have at least?

    Q20
    A cyclist drove one kilometer, with the wind in his back, in three minutes and drove the same way back, against the wind in four minutes. If we assume that the cyclist always puts constant force on the pedals, how much time would it take him to drive one kilometer without wind?

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