Bank Exams प्रश्न और उत्तर का अभ्यास करें

प्र: In a bag, there are 8 red, 7 blue and 6 green flowers. One of the flower is picked up randomly. What is the probability that it is neither red nor green ? 1317 0

  • 1
    13
    सही
    गलत
  • 2
    821
    सही
    गलत
  • 3
    621
    सही
    गलत
  • 4
    2021
    सही
    गलत
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उत्तर : 1. "13"
व्याख्या :

Answer: A) Option A Explanation: Total number of flowers = (8+7+6) = 21.   Let E = event that the flower drawn is neither red nor green.  = event taht the flower drawn is blue.    --> n(E)= 7  --> P(E)=  721=13

प्र: In a group of 6 boys and 4 girls, four children are to be selected. In how many different ways can they be selected such that at least one boy should be there ? 1668 0

  • 1
    205
    सही
    गलत
  • 2
    194
    सही
    गलत
  • 3
    209
    सही
    गलत
  • 4
    159
    सही
    गलत
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उत्तर : 3. "209"
व्याख्या :

Answer: C) 209 Explanation: We may have (1 boy and 3 girls)or(2boys and 2 girls)or(3 boys and 1 girl)or(4 boys). Required number of ways = (C16× C34) + C26×C24  + (C36× C14) + (C46)   = (24+90+80+15)  = 209.

प्र: How many 3-digit numbers can be formed from the digits 2, 3, 5, 6, 7 and 9 which are divisible by 5 and none of the digits is repeated ? 1345 0

  • 1
    15
    सही
    गलत
  • 2
    20
    सही
    गलत
  • 3
    5
    सही
    गलत
  • 4
    10
    सही
    गलत
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उत्तर : 2. "20"
व्याख्या :

Answer: B) 20 Explanation: Since each number to be divisible by 5, we must have 5 0r 0 at the units place. But in given digits we have only 5.   So, there is one way of doing it.   Tens place can be filled by any of the remaining 5 numbers.So, there are 5 ways of filling the tens place.   The hundreds place can now be filled by any of the remaining 4 digits. So, there are 4 ways of filling it.   Required number of numbers = (1 x 5 x 4) = 20.

प्र: Out of seven consonants and 4 vowels, how many words of 3 consonants and 2 vowels can be formed ? 1307 0

  • 1
    25200
    सही
    गलत
  • 2
    25000
    सही
    गलत
  • 3
    25225
    सही
    गलत
  • 4
    24752
    सही
    गलत
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उत्तर : 1. "25200"
व्याख्या :

Answer: A) 25200 Explanation: Number of ways of selecting (3 consonants out of 7) and (2 vowels out of 4) =( C37×C24 ) = 210. Number of groups, each having 3 consonants and 2 vowels =210 Each group contains 5 letters. Number of ways of arranging 5 letters among themselves = 5! = 120.  Required number of words = (210 x 120) = 25200.

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उत्तर : 3. "star car quick demand on fat"
व्याख्या :

Answer: C) star car quick demand on fat Explanation: Obsrving the given arrangement, we find the following pattern:If we arrange the words in the given input in the alphabetical order and then label them as 1,2,3,4,5,6, then the last step contains the words in the order 6,1,5,2,4,3. However, the position of only one word is alteredat each step.Input:car on star quick demand fatStep1: star car on quick demand fatStep2: star car quick on demand fatStep3: star car quick demand on fat Hence, the answer is C

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उत्तर : 2. "28 24 16 15 09 04"
व्याख्या :

Answer: B) 28 24 16 15 09 04 Explanation: Carefully obsrving the given arrangement, we find the following pattern:We observe that the given numbers are arranged in descending order (from left to right), altering the position of only one number in each step, followed by the other numbers as it is. The process continues till the whole set of numbers is arranged in the descending order. Step1: 28 16 09 24 15 04Step2: 28 24 16 09 15 04Step3: 28 24 16 15 09 04 Hence, the answer is B

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उत्तर : 1. "cough fight sough acts cats idea more"
व्याख्या :

Answer: A) cough fight sough acts cats idea more Explanation: Carefully obsrving the given arrangement, we find the following pattern:We observe that,first all the words with the highest number of letters are arranged in the alphabetical order, followed by the words with the second highest number of letters and so on.However, the position of only one word is altered at each step.Input: more fight cats cough sough acts ideaStep1: cough more fight cats sough acts ideaStep2: cough fight more cats sough acts ideaStep3: cough fight sough more cats acts ideaStep4: cough fight sough acts more cats ideaStep5: cough fight sough acts cats more ideaStep6: cough fight sough acts cats idea more   Hence, the answer is A

प्र: If Laxmi is taller than Ramya but shorter than Susmitha and Ramya is as tall as Hema but taller than Avanthi, then Hema is : 2584 0

  • 1
    shorter than Ramya
    सही
    गलत
  • 2
    taller than Avanthi
    सही
    गलत
  • 3
    taller than susmitha
    सही
    गलत
  • 4
    shorter than Laxmi
    सही
    गलत
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उत्तर : 4. "shorter than Laxmi"
व्याख्या :

Answer: D) shorter than Laxmi Explanation: As given, we have: Susmitha > Laxmi > Ramya; Ramya = Hema, Ramya > Avanthi Thus the sequence of heights becomes: Susmitha > Laxmi > Ramya = Hema > Avanthi Clearly, Hema is shorter than Laxmi.

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