CAT प्रश्न और उत्तर का अभ्यास करें

प्र: Rs. 50000 is divided into two parts One part is given to a person with 10% interest and another part is given to a person with 20 % interest. At the end of first year he gets profit 7000 Find money given by 10% ? 1597 0

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    Rs. 20,000
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  • 2
    Rs. 10,000
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    गलत
  • 3
    Rs. 30,000
    सही
    गलत
  • 4
    Rs. 40,000
    सही
    गलत
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उत्तर : 3. "Rs. 30,000"
व्याख्या :

Answer: C) Rs. 30,000 Explanation: Let first part is 'K' and second part is 'L' then K + L = 50000---------eq1Total profit = profit on x + profit on y7000 = (K x 10 x 1)/100 + (L x 20 x 1)/10070000 = K + 2L-----------------------------------eq270000 = 50000 + Lso L = 20000 then K = 50000 - 20000 = 30000first part on 10% is = Rs.30000

प्र: Virus doubles every 3 mins. It is 'K' in 1 hour, when was it K/4 ? 1955 0

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    29 min
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  • 2
    25 min
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  • 3
    54 min
    सही
    गलत
  • 4
    57 min
    सही
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उत्तर : 3. "54 min"
व्याख्या :

Answer: C) 54 min Explanation: If virus is K in 1hr i.e 60 minthen in 57 min it was K/2 as it doubles every 3 minutes=> In 54 min it was K/4.At 54 minutes it was K/4.

प्र: In a class, seven students are standing in a row. Q is standing left to R but right to P. O is standing right to N and left to P. Similarly, S is standing right to R and left to T. Find out who is standing in the middle ? 2312 0

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    Q
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  • 2
    R
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  • 3
    P
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    गलत
  • 4
    S
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उत्तर : 1. "Q"
व्याख्या :

Answer: A) Q Explanation: As from the given conditions;Order is N O P Q R S THere the student standing in the middle is 'Q'.

प्र: What is better, to have 70% discount or 40 and 30% discount consequently ? 2905 0

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    40% is better
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  • 2
    70% is better
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  • 3
    Both are same
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  • 4
    None
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उत्तर : 2. "70% is better"
व्याख्या :

Answer: B) 70% is better Explanation: Let Price be Rs.100 1st CASE: Then 100 x 70/100 = 70=> price after discount = 100-70 = Rs.30 2nd CASE: Then 100 x 40/100 = 40=> price after discount = 100-40 = Rs.60then60 x 30/100 = 18=> price after 2 consequent discount = 60-18 = Rs.42 =>from 1 and 2 cases, 70% discount is better.

प्र: In a row, Kumar is at 7th place from the left and Pawan is at 9th place from the right. When they interchange the positions Kumar becomes 11th from left. How many were seated in the row ? 3668 0

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    19
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  • 2
    20
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  • 3
    21
    सही
    गलत
  • 4
    27
    सही
    गलत
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उत्तर : 1. "19"
व्याख्या :

Answer: A) 19 Explanation: Initialy from left 7th = kumarfrom right 9th = pawanInterchange kumar = 11th from left, from right kumar = 9th;11+8 = 19;8 is 1,2,3,4,5,6,7(pawan),8,9,10,11(kumar),12,13,14,15,16,17,18,19;simply count the 9th place from right we will get total as 19.

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उत्तर : 4. "11 & 9"
व्याख्या :

Answer: D) 11 & 9 Explanation: Let the number of apples in each tree of the 5 farmers be a, b, c, d,e respectively. Therefore total no of apples are 7a, 9b, 11c, 13d and 14e respectively. Given, 7a+1 = 9b+3 = 11c-1 = 13d+3 = 14e-6 = x 9b+3 = 13d+3===> 9b = 13dso take b = 13 and d = 9 9b+3 = 9*13+3 = 120 ie, x=120 substituting7a+1 = 1207a = 119a = 17 11c-1 = 12011c = 121c=11 14e-6 = 12014e = 126e = 9 Yields per tree in the orchards of d 3rd & 4th farmers= 11,9

प्र: Which alphabet replaces the question mark ? 63 O 4972 T 3796 L 1514 ? 58 4152 0

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    A
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  • 2
    B
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  • 3
    C
    सही
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  • 4
    D
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उत्तर : 3. "C"
व्याख्या :

Answer: C) C Explanation: 6-3 = 3 9-4 = 5 (3x5=15) 15=O7-2 = 5 7-3 = 4 (5x4=20) 20=T9-6 = 3 5-1 = 4 (3x4=12) 12=L Similarly, 4-1 = 3 8-5 = 1 (3x1=3) 3=C

प्र: If Reena’s age was twice of her present age, when subtracted from four times three years from hence, with three times the three years before her present age. What will be her age after one year ? 2375 0

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    22 yrs
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  • 2
    21 yrs
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  • 3
    20 yrs
    सही
    गलत
  • 4
    24 yrs
    सही
    गलत
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उत्तर : 1. "22 yrs"
व्याख्या :

Answer: A) 22 yrs Explanation: Let Reena’s present age be 'K' yrs.Given:{(K+3) x 4} - {(K-3) x 3)} => K = 21 yrsSo her present age is 21 yrs.Then, her age after 1 year is 22 yrs.

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