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Q #71
:

Infosys Quants Question


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Supremo Coal limited mined 8 3 1 tons of coal on Tuesday. 5 4 3 tons of c oal on Monday and 9 2 1 tons of coal on Wednesday. If the goal is to mine 30 tons of coal this week. Then how many more tons of coal needs to be mined?
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Adding the production of all the days the sum is 23

12

7

so answer is 30-23

12

7

= 6.41tonnes



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Q #72
:

Infosys Quants Question


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Use the properties of logarithms to solve the following equation log((ab(d+2))/c3))
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Using the properties of log that is log(ABC)=log A+ log B+log C and log D3 = 3 log D

We will get the answer log a + log b + log(d+2)-3 log C.



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Q #73
:

Infosys Quants Question


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Sudha purchased 3 kg potato from market. She used 1/3 of it in baked potatoes and 1/2 of remaining in mixed vegetables. What quantity of potatoes is she left with?
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1/3 of 3kg is 1 kg., Remaining are2 kg.. 1/2 of the remaining 2 kg is 1 kg so 2-1=1kg. 1 kg is left in the last.

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Q #74
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Infosys Quants Question


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A number becomes a perfect square when we subtract 1 from it. Which of the following cannot be the last digit of that number?
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Unit digit of a perfect square is 0,1,4,5,6,9

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Q #75
:

Infosys Quants Question


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If log 1050 + 2 log102 + log10 5 = x, then solve for x.
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log 1050 + log1022 + log10 5 = x

Log(50*4*5) = x

1000 = 10x

X = 3



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