1 .
A student instead of finding the value of $8^ 3$ of a natural number, calculated $8^ 13$ of the same number. If his value is 480 less than the actual value, then find the number
Answer & Explanation
Answer : Option B |
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Explanation : |
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2 .
The simple interest and compound interest on a certain sum for 2 years are Rs. 700 and Rs. 770 respectively. Find the rate of interest
Answer & Explanation
Answer : Option B |
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Explanation : |
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3 .
If the marked price of a article is 40% more than the cost price and a discount of 20% is gives on it, then the percentage profit is
Answer & Explanation
Answer : Option C |
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Explanation : |
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4 .
Find the value of (6.23 $\times$ 6.23 $\times$ 6.23 + 33 $\times$ 6.23 $\times$ 4.77+ 4.77$\times$ 4.77$\times$ 4.77)
Answer & Explanation
Answer : Option D |
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Explanation : |
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5 .
The ratio of expense and savings of Ram is 5 : 6. What will be the percentage increment in the expenses so that ratio of expense and saving 6 : 5 ?
Answer & Explanation
Answer : Option B |
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Explanation : |
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Increase in expenses = 6- 5 = Rs. 1
% Increase in the expense = $1\over 5$ $\times$ 100 = 20% |
6 .
A shopkeeper marks the garments at such a price that even after allowing a discount of 12.5%, he makes a profit of 10%. Find the marked price of a suit which costs Rs. 1,470
Answer & Explanation
Answer : Option D |
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Explanation : |
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7 .
The average age of 3 students is 15 years and their ages are in the proportion 2 : 3 : 4. The age of eldest student is
Answer & Explanation
Answer : Option A |
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Explanation : |
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The average age of 3 students = 15 yrs.
sum of their ages = 15 $\times$ 3 = 45 yrs.
Their ages are in proportion = 2 : 3 : 4
Let the multiple of their ages = x yrs
According to question:-2x+ 3x+ 4x= 45
x= $45\over 6$
= 5
The age of the eldest student = 4 $\times$ 5 = 20 yrs |
8 .
A train running at an average speed of 48 km/hr performs a journey in 6 hrs 30 min. How long would the same journey take it after crossing 180 kms the speed was reduced to 33 km/hr ?
Answer & Explanation
Answer : Option A |
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Explanation : |
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9 .
A sum of Rs. 76 is divided among A, B, C in such a way that A gets Rs. 7 more than that what B gets and B gets Rs. 6 more than what C gets. the ratio of their shares is
Answer & Explanation
Answer : Option C |
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Explanation : |
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Let money recived by C = Rs. x
than money recived By B = Rs. (x+ 6)
than money recived by A = Rs. (x+ 6 + 7)
A.T.Q.
x+ x+ 6 + x+ 13 = 76
x= Rs. 19
Required ratio = 32 : 25 : 19 |
10 .
If x= $k^ 3$ - $3k^ 2$ and y= 1 - 3k, then for what value of k, will be x= y?
Answer & Explanation
Answer : Option B |
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Explanation : |
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x = y
So, $k^ 3$ - 3k 2 = 1- 3$
k^ 3$ - 3$k^ 2$ + 3k - 1 = 0
$(k-1)^ 3$ = 0 $\Rightarrow$ k = 1 |
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