GATE प्रश्न और उत्तर का अभ्यास करें

प्र: The Hardest Logic Puzzle Ever? If a giraffe has two eyes, a monkey has two eyes, and an elephant has two eyes, how many eyes do we have? 7681 0

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    3
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  • 2
    4
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  • 3
    1
    सही
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  • 4
    2
    सही
    गलत
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उत्तर : 2. "4"
व्याख्या :

Answer: B) 4 Explanation: 4 eyes. Here in the question, it is asked how many Eyes We have so that means here the person who has asked the question is also including the person who is suppose to give the answer. In a clear understanding, the Conversation is happening between 2 people 1st who asked the question and 2nd to whom it has been asked, which means there are 4 eyes.

प्र: Which is the next number in the sequence: 1, 3, 6, 11, 20, 37, ?? 7623 0

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    49
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  • 2
    56
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  • 3
    64
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  • 4
    70
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उत्तर : 4. "70"
व्याख्या :

Answer: D) 70 Explanation: Here the given series is 1, 3, 6, 11, 20, 37, ??, and the logic behind the series is 1 x 2 + 1 = 3 3 x 2 + 0 = 6 6 x 2 + (-1) = 11 11 x 2 + (-2) = 20 20 x 2 + (-3) = 37 37 x 2 + (-4) = 70   Hence, the next number in the given series is 70.

प्र: Which two months in a year have the same calendar? 7551 0

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    October, December
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  • 2
    April, November
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  • 3
    June, October
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  • 4
    April, July
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उत्तर : 4. "April, July"
व्याख्या :

Answer: D) April, July Explanation: If the period between the two months is divisible by 7, then that two months will have the same calender . Now,(a). October + November = 31 + 30 = 61 (not divisible by 7) (b). Apr. + May + June + July + Aug. + Sep. + Oct. = 30 + 31 + 30 + 31 + 31 +30 + 31 = 213 (not divisible by 7) (c). June + July + Aug. + Sep. = 30 + 31 + 31 + 30 = 122 (not divisible by 7) (d). Apr. + May + June = 30 + 31 + 30 = 91 (divisible by 7)   Hence, April and July months will have the same calendar.

प्र: 45% of 750  -  25% of 480 = ? 7535 0

  • 1
    337.50
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  • 2
    217.50
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  • 3
    376.21
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  • 4
    120
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उत्तर : 2. "217.50"
व्याख्या :

Answer: B) 217.50 Explanation: Given expression = (45 x 750/100) - (25 x 480/100) = (337.50 - 120) = 217.50

प्र: In a certain code language 'how many goals scored' is written as '5397'; 'many more matches' is written as '982'; and 'he scored five' is written as '163'. How is 'goals' written in that code language ? 7494 0

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    5
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  • 2
    7
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  • 3
    3
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  • 4
    Data is not sufficient
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उत्तर : 4. "Data is not sufficient"
व्याख्या :

Answer: D) Data is not sufficient Explanation: From the given data,how many goals scored = 5397....(1)many more matches = 982.....(2)he scored five = 163.....(3)from (1)&(2), many = 9 ....(4)from (1)&(3), scored = 3 ....(5)Using (4)&(5)in(1), we get goals = 5 or 7.

प्र: How many times can you subtract 10 from 100? 7467 0

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    9 times
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  • 2
    10 times
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  • 3
    1 time
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  • 4
    0 times
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उत्तर : 3. "1 time"
व्याख्या :

Answer: C) 1 time Explanation: How many times can you subtract 10 from 100, for this if we go through logically, it is only 1 time. For the first time if we subtract 10 from 100, then there will no 100 to subtract from.   Hence, it is only 1 time we can subtract 10 from 100.

प्र: The second day of a month is Sunday, What will be the last day of the next month which has 31 days  ? 7434 0

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    Friday
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  • 2
    Saturday
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  • 3
    Sunday
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  • 4
    Can't be determined
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उत्तर : 4. "Can't be determined"
व्याख्या :

Answer: D) Can't be determined Explanation: We cannot find out the answer because the number of days of the current month is not given.

प्र: In a party there are 5 couples. Out of them 5 people are chosen at random. Find the probability that there are at the least two couples ? 7374 0

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    6/7
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  • 2
    19/21
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  • 3
    7/31
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  • 4
    5/21
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उत्तर : 4. "5/21"
व्याख्या :

Answer: D) 5/21 Explanation: Number of ways of (selecting at least two couples among five people selected) = (⁵C₂ x ⁶C₁) As remaining person can be any one among three couples left. Required probability = (⁵C₂ x ⁶C₁)/¹⁰C₅= (10 x 6)/252 = 5/21

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