There are 100 questions in the test booklet of Mathematics. If Stephen scores 140 marks when 2 marks are awarded for each correct answers and 1 marks is deducted for each incorrect answer then find the number of correct answers attempted by Stephen if he attempted all questions.
A)
65
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B)
85
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C)
80
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D)
75
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E)
None of these
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A boy was asked to add \[5\frac{3}{5}\] to a given number. Instead of adding he subtract \[5\frac{3}{5}\] from the given number and got the result as \[\frac{1}{3}\]of the given number. Find the reciprocal of the given number.
A)
\[\frac{42}{5}\]
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B)
\[\frac{5}{28}\]
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C)
\[\frac{5}{42}\]
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D)
\[\frac{5}{14}\]
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E)
None of these
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The value of \[\frac{{{2}^{x+3}}\times {{3}^{2x-y}}\times {{5}^{x+y+3}}\times {{6}^{y+1}}}{{{6}^{x+1}}\times {{10}^{y+3}}}\]is :
A)
1
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B)
0
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C)
\[-1\]
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D)
10
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E)
None of these
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If \[P=\frac{-14}{5}\times \left( \frac{-10}{9} \right)\times \left( \frac{22}{7} \right)\] and \[Q=(-25)\times \frac{17}{5}\times \frac{2}{34}\] then find the value of \[\frac{P+Q}{P-Q}.\]
A)
\[-1\frac{14}{15}\]
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B)
\[\frac{14}{15}\]
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C)
\[\frac{7}{17}\]
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D)
\[-3\frac{14}{25}\]
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E)
None of these
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Evaluate: \[{{\left( 2p-\frac{1}{2}q+r \right)}^{2}}\]
A)
\[4{{p}^{2}}+\frac{1}{4}{{q}^{2}}+{{r}^{2}}-2pq-2qr+4pr\]
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B)
\[2{{p}^{2}}+\frac{1}{4}{{q}^{2}}+{{r}^{2}}-2pq-2qr+4pr\]
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C)
\[4{{p}^{2}}+\frac{1}{4}{{q}^{2}}+{{r}^{2}}-2pq+qr+4pr\]
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D)
\[4{{p}^{2}}+\frac{1}{4}{{q}^{2}}+{{r}^{2}}-2pq-qr+4pr\]
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E)
None of these
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Due to reduction of 20 % in the price of petrol, a man is able to buy 1.5 litre more petrol for Rs. 1200. The reduced rate of petrol per litre is:
A)
Rs. 180
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B)
Rs. 160
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C)
Rs. 170
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D)
Rs. 200
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E)
None of these
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Solve for z \[\frac{z+6}{4}+\frac{z-3}{5}=\frac{5z-4}{6}\]
A)
\[\frac{130}{23}\]
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B)
\[\frac{94}{23}\]
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C)
\[\frac{272}{43}\]
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D)
\[\frac{236}{23}\]
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E)
None of these
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A, B, C, D are quantities of same kind and the ratio of A to B is 3 : 5, B to C is 7 :9and C to D is 3 : 11, then Statement 1: A : B is greater than C : D. Statement 2: B : D is the greatest among them. Statement 3: A : B is greater than B : C. Which one of the following options represents the correct statement?
A)
1, 2 and 3
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B)
1 and 2
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C)
2 and 3
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D)
1 and 3
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E)
None of these
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The price of pure mustard oil is Rs. 100 per litre. A shopkeeper adulterates it with some other types of oil at Rs. 50 per litre. He sells the mixture at the rate of Rs. 96 per litre so that to gain 20 % on whole transaction. The ratio in which he mixed the two oils is:
A)
\[1:2\]
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B)
\[2:3\]
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C)
\[3:2\]
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D)
\[1:4\]
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E)
None of these
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Find the percent of loss if a man bought a scooty for Rs. 35680 and sold if for Rs. 32160.
A)
4.60%
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B)
2.84%
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C)
9.86%
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D)
8.67%
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E)
None of these
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Peterson invested certain sum of money 9 years ago. He puts his money at the rate of 4% for first 2 years, 6% per annum for the next 4 years and 8% per annum for the period beyond 6 years. If at the end of the period he gets the simple interest as Rs. 1120, then his principal sum was:
A)
Rs. 2000
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B)
Rs. 2500
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C)
Rs. 3000
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D)
Rs. 3500
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E)
None of these
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The traffic police recorded the speed (in km/h) of 8 cars as 47, 53, 49, 60, 39, 42, 48 and 52. Later on an error in the recording instrument was found. Find the correct mean speed of the cars if the instrument recorded 6 km/h more in each case.
A)
55.2 km/h
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B)
56.2 km/h
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C)
42.75 km/h
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D)
58.2 km/h
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E)
None of them
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How many prime numbers are there in \[{{35}^{3}}\times {{11}^{10}}\times {{6}^{7}}\]?
A)
42
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B)
32
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C)
30
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D)
25
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E)
None of these
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A number is 62 more than the average of its quarter and one-fifth. Find the number.
A)
57
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B)
80
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C)
49
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D)
36
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E)
None of these
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If \[\frac{x}{y}=\frac{4}{5}\], then the value of \[\frac{8}{9}+\frac{y-x}{y+x}\]is:
A)
\[\frac{2}{3}\]
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B)
\[\frac{3}{2}\]
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C)
\[\frac{2}{3}\]
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D)
1
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E)
None of these
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Simplify: \[{{\left[ {{7}^{-1}}+{{\left( \frac{3}{2} \right)}^{-1}} \right]}^{-1}}\]
A)
\[\frac{17}{21}\]
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B)
\[\frac{5}{151}\]
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C)
\[1\frac{4}{17}\]
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D)
\[\frac{21}{105}\]
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E)
None of these
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Find the value of the given expression: \[\frac{{{2}^{x+3}}\times {{3}^{2x-y}}\times {{5}^{x+y+3}}\times {{6}^{y+1}}}{{{6}^{x+1}}\times {{10}^{y+3}}\times {{15}^{x}}}\]
A)
0
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B)
1
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C)
\[-1\]
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D)
\[-2\]
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E)
None of these
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By adding the numbers 456z8 and 3456z we get 80245. Find the value of z.
A)
8
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B)
7
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C)
0
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D)
9
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E)
None of these
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Find the value of \[1-[2-\{5-(4-\overline{3-2})\}]\]
A)
2
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B)
3
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C)
1
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D)
0
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E)
None of these
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Find the value of \[\frac{{{3}^{n+1}}-{{3}^{n}}}{{{3}^{n+2}}-{{3}^{n+1}}}\]
A)
\[\frac{3}{2}\]
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B)
\[\frac{2}{3}\]
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C)
3
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D)
\[\frac{1}{3}\]
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E)
None of these
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Find the value of \[{{\left\{ {{(216)}^{\frac{2}{3}}} \right\}}^{\frac{1}{2}}}\]
A)
8
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B)
4
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C)
10
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D)
6
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E)
None of these
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If \[{{27}^{h}}=\frac{9}{{{3}^{y}}}\], then find the value of y.
A)
\[\frac{1}{4}\]
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B)
4
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C)
\[\frac{1}{2}\]
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D)
2
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E)
None of these
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Factorize: \[{{x}^{3}}-3{{x}^{2}}+3x-1\]
A)
\[{{(x-1)}^{3}}\]
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B)
\[(x-1)\,(x-3)\]
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C)
\[(x+1)\,(x-3)\]
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D)
\[{{(x-1)}^{2}}\,(x-3)\]
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E)
None of these
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