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Dsssb pgt mathemetics Practice Questions & Answers

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Consider n(U) = 80. n(A) = 40. n(B) = 55 and $n(A \cap B)$ = 20 . Then the value of $n(A\oplus B)$ is:

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Consider n(U) = 80. n(A) = 40. n(B) = 55 and $n(A \cap B)$ = 20 . Then the value of $n(A\oplus B)$ is:
1). 25
2). 55
3). 45
4). 35

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The statutory power for exchange control was provided to the RBI by the Foreign Exchange Regulation Act (FERA) of:

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The statutory power for exchange control was provided to the RBI by the Foreign Exchange Regulation Act (FERA) of:
1). 1963
2). 1981
3). 1923
4). 1947

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The lenstli of the shortest distance between the lines $\frac{x-1}{2}=\frac{y-2}{3}=\frac{z-3}{4}$ and $\frac{x-2}{3}=\frac{y-4}{4}=\frac{z-5}{5}$ is :

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The lenstli of the shortest distance between the lines $\frac{x-1}{2}=\frac{y-2}{3}=\frac{z-3}{4}$ and $\frac{x-2}{3}=\frac{y-4}{4}=\frac{z-5}{5}$ is :
1). $\frac{2}{3\sqrt{6}}$
2). $\frac{1}{\sqrt{6}}$
3). $3\sqrt{30}$
4). 1$3\sqrt{66}$

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Which of these is NOT a good aspect relating to reading a newspaper ?

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Which of these is NOT a good aspect relating to reading a newspaper ?
1). Latest update on the current happenings
2). Exaggerated or underplayed news of the real situation
3). Increased vocabulary
4). Knowledge on antisocial elements in the society

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The mode of the numbers 25, 15, 23, 40, 27, 25. 23, 25, 20 is :

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The mode of the numbers 25, 15, 23, 40, 27, 25. 23, 25, 20 is :
1). 13
2). 24.8
3). 24.7
4). 25