Quantitative Aptitude Practice Question and Answer

Q: 6, 3, 3, 6, 24, ? Find the next number in the given number series? 7266 0

  • 1
    192
    Correct
    Wrong
  • 2
    186
    Correct
    Wrong
  • 3
    182
    Correct
    Wrong
  • 4
    194
    Correct
    Wrong
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Answer : 1. "192"
Explanation :

Answer: A) 192 Explanation: Given    6   3   3   6   24   ?   Here   6   6 x 0.5 = 3   3 x 1 = 3    3 x 2 = 6   6 x 4 = 24    24 x 8 = 192   The next number in the given series is 192.

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Answer : 2. "Rs.46400"
Explanation :

Answer: B) Rs.46400 Explanation: Interest received by L from K = 8% of half of Rs.40,000   ⇒8100×20000=1600     Amount received by L per annum for being a working partner = 1200 x 12 = Rs.14,400   Let 'A' be the part of remaing profit that 'L' receives as his share.    Total income of 'K' = only his share from the reamaing profit                                 = 'A', as both share equally.   Given income of L = Twice the income of K   --> (1600 + 14400 + A ) = 2A --> A= Rs.16000 Thus total profit = 2A + Rs.14,400= 2(16000) + 14400                                                    = 32000 +14400 = Rs.46,400.

Q: For x∈N, x>1,  and  p=logxx+1, q=logx+1x+2 then which one of the following is correct? 6894 2

  • 1
    p < q
    Correct
    Wrong
  • 2
    p = q
    Correct
    Wrong
  • 3
    p > q
    Correct
    Wrong
  • 4
    can't be determined
    Correct
    Wrong
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Answer : 3. "p > q"
Explanation :

Answer: C) p > q Explanation: kl>k+1l+1 for (k,l) > 0 and  k > l        Let     k = x+1    and   l = x       Therefore, x+1x>(x+1)+1(x)+1        (x + 1) > x       Therefore, log(x+1)log(x)>log(x+2)log(x+1)       ⇒logxx+1 >logx+1x+2

Q: what is the missing number in the sequence given below? 12  9  13.50  30.37  ?  341.71 6805 0

  • 1
    87.63
    Correct
    Wrong
  • 2
    91.12
    Correct
    Wrong
  • 3
    93.41
    Correct
    Wrong
  • 4
    97.94
    Correct
    Wrong
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Answer : 2. "91.12"
Explanation :

Answer: B) 91.12 Explanation: Given number series is 12  9  13.5  30.3  ?  341.7 Here the pattern followed by the series is 12  12 x 0.75 = 9 9 x 1.5 = 13.5 13.5 x 2.25 = 30.3 30.37 x 3 = 91.12 91.12 x 3.75 = 341.71   Hence, the missing number in the sequence is 91.12.

Q: A cistern has a leak which would empty the cistern in 20 minutes. A tap is turned on which admits 4 liters a minute into the cistern, and it is emptied in 24 minutes. How many liters does the cistern hold ? 6787 0

  • 1
    360 lit
    Correct
    Wrong
  • 2
    480 lit
    Correct
    Wrong
  • 3
    320 lit
    Correct
    Wrong
  • 4
    420 lit
    Correct
    Wrong
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Answer : 2. "480 lit"
Explanation :

Answer: B) 480 lit Explanation: 1/k - 1/20 = -1/24 k = 120 120 x 4 = 480 Therefore, the capacity of the cistern is 480 liters.

Q: 45% of 750  -  25% of 480 = ? 6689 0

  • 1
    337.50
    Correct
    Wrong
  • 2
    217.50
    Correct
    Wrong
  • 3
    376.21
    Correct
    Wrong
  • 4
    120
    Correct
    Wrong
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Answer : 2. "217.50"
Explanation :

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

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