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Question: A zookeeper counted the heads of animal and found it to be 80. When he counted the legs of animals, he found the number to be 260. If the zoo had either Pigeons or horses, how many horses were there in the zoo ?
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Question: A zookeeper counted the heads of animal and found it to be 80. When he counted the legs of animals, he found the number to be 260. If the zoo had either Pigeons or horses, how many horses were there in the zoo ?
Question 1: A zookeeper counted the heads of animal and found it to be 80. When he counted the legs of animals, he found the number to be 260. If the zoo had either Pigeons or horses, how many horses were there in the zoo ?
View topic: বিন্যাস, সমবেশ ও সম্ভাব্যতা (Permutation, Combination and Probability)
30
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50
60
Source: Janata Bank Ltd - Executive Officer - 26.06.2015
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Answer: 50
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২০ সদস্যবিশিষ্ট একটি ফুটবল দল থেকে একজন অধিনায়ক ও একজন সহ-অধিনায়ক কতভাগে নির্বাচন করা যাবে?
Three houses are available in a locality. Three persons apply for the houses. Each applies for one house without consulting others. The probability that all the three apply for the same house is -
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When they had a meeting seven company executives __ T, U, V, W, X, Y and Z ___ sit at a rectangular table .Three executives sit along one side of the table , and three sit along the other side, each directly opposite one of the other three. The seventh sits at the head of the table . There is no seat at the foot of the table . Ualways sits in one of te two seats farthest from the head of the table. Y and V always sit next to each other .V never sits next to Z . If Z does not sit at the head of the table, W sits there. If W sits directly opposite T, X must sit next to which of the following excutives?
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Two dice are thrown simultaneously. What is the probability of getting the sum of the face number is odd?
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In a box there are 10 apples and 2/5th of the apples are rotten . If three apples are taken out from the box, what will be the probability that at least one apples is rotten .
A special lottery is to be held to select the student who will live in the only deluxe room in a dormitory. There are 100 seniors, 150 juniors, and 200 sophomores who applied. Each senior's name is placed in the lottery 3 times, each junior's name, 2 times, and each sophomore's, 1 time. What is the probability that a senior's name will be chosen?
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বাগধারা
সময়, দূরত্ব ও গতিবেগ (Time, distance & speed)
জাতিসংঘ ও অন্যান্য আন্তর্জাতিক সংস্থা
প্রগ্রারমিং ভাষা ও সফটওয়্যার
সূচক ও লগারিদম (Exponents and Logarithms)
সাধারণ বিজ্ঞান
মহাদেশ ও দেশ পরিচিতি
বাংলা সাহিত্যঃ প্রাচীন ও মধ্য যুগ
ল.সা.গু ও গ.সা.গু (L.C.M and H.C.F)
কম্পিউটার এর ইতিহাস ও বিবিধ
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