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Dsssb year Practice Questions & Answers

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Where is the headquarters of UNICEF located?

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Where is the headquarters of UNICEF located?
1). London
2). New York
3). Shanghai
4). Paris

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A sum of Rs. 13.600 amounts to Rs.16.456 at compound interest in a certain time at a certain rate percent per annum. What will the same sum amount to at the same rate hi half the earlier time?

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A sum of Rs. 13.600 amounts to Rs.16.456 at compound interest in a certain time at a certain rate percent per annum. What will the same sum amount to at the same rate hi half the earlier time?
1). Rs. 14,840
2). Rs. 14,960
3). Rs. 14,980
4). Rs. 15,840

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Which of the following is FALSE ?

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Which of the following is FALSE ?
1). A relation (table) may have multiple secondary7 keys
2). The value of primary key can't be null
3). Super key satisfies the "minimality" condition
4). Secondary key is also a candidate key

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Find the missing number: $\frac{1}{2},\frac{3}{4},\frac{5}{8},\frac{7}{16},\frac{9}{32},$_____

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Find the missing number:
$\frac{1}{2},\frac{3}{4},\frac{5}{8},\frac{7}{16},\frac{9}{32},$_____
1). $\frac{10}{64}$
2). $\frac{11}{48}$
3). $\frac{10}{46}$
4). $\frac{11}{64}$

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When a + b + c = 0, then the quadratic equation $3ax^{2}+2bx+c=0$ has :

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When a + b + c = 0, then the quadratic equation $3ax^{2}+2bx+c=0$ has :
1). Imaginary roots
2). At least one root in [0, 1]
3). One root in [-2,-1] and other root in [2, 3]
4). One root in [-2, -1] and other root in [1, 2]