Math Chapter Wise

EnglishRPSC PGT 2022

Q61.“A” bag contains 2 white and 3 black balls and “B” bag contains 4 white and 5 black balls. A ball is drawn from either. Bag. If it is black, then what is probability that it was drawn from “B” bag?

A26/45 B75/156 C65/156 D75/158

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EnglishRPSC PGT 2022

Q62.The probability that a man hits the target is 4 5. If he fires 5 times, then the probability that he will hit the target thrice is -

A10. 3 4 5 B5. 4 5 C5. 3 4 5 D16/5

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EnglishRPSC PGT 2022

Q63.The formula to calculate the coefficient of quartile deviation is -

AQ Q 3 1 2 + BQ Q 3 1 2 − CQ Q 3 4 Q Q 3 1 − + DQ Q 3 1 Q Q 3 1 − +

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EnglishRPSC PGT 2022

Q64.Three cards are randomly drawn from a pack of 52 playing cards. The probability that they are of the same colour is-

A16/17 B3/17 C4/17 D2/17

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EnglishDSE TGT 2022

Q65.The probability of getting a head in a throw of an unbiased coin is–

A1/2 B1/4 C1 D2/3

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EnglishDSE TGT 2022

Q66.If the probability of getting a spade card is 1/4, then the probability of NOT getting a spade card is

A1/4 B1/2 C3/4 D4/5

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EnglishDSE TGT 2022

Q67.An ogive is used to determine

AMean BMedian CGeometric mean DHarmonic mean

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EnglishDSE TGT 2022

Q68.A card is taken out at a random from a pack of 52 cards numbered from 1 to 52. The probability that the number on the card is a prime number less than 20 is

A1/12 B2/12 C3/13 D2/13

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EnglishDSE TGT 2022

Q69.In a simultaneous throw of two dice, the probability of getting a total sum of 8 is

A3/36 B4/36 C5/36 D6/36

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EnglishDSE TGT 2022

Q70.An event containing only a single sample point is called

AEqually likely events BImpossible events CPossible events DSimple events

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EnglishDSE TGT 2022

Q71.The probability of getting the sum as a prime number when two dice are thrown together is

A5/18 B5/12 C4/13 D4/17

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EnglishDSE TGT 2022

Q72.If A and B are mutually exclusive events, then ∩ P(A B)is

A0 B1 C–1 D2

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EnglishDSE TGT 2022

Q73.The middle term of the series arranged in ascending or descending order is called

AMean BMedian CMode DStandard deviation

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EnglishDSE TGT 2022

Q74.What is the average of the median of the set A= {2,1,3,6,7,9,8} and the mode of set B= {2,3,8,4,6,8,8,9,9}?

A5 B6 C7 D9

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EnglishRPSC PGT 2022

Q75.Incorrect statement is -

AA compact metric space is sequentially compact. BA closed subset of compact metric space is compact. CA compact metric space does not obey Bolzano-Weierstrass property. DEach finite subset in a metric space is compact.

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EnglishHaryana PGT 2019

Q76.Let x1, x2,..., xn be 'n' observation such that ∑ 2 i x = 400 and ∑ i x = 80, Then a possible value of 'n' among the following is:

A12 B9 C18 D15

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EnglishDSSSB PGT 2021

Q77.If in the first hundred natural numbers, x be one of them, the probability that 100 x + x is greater than 50 is –

A9/11 B11/20 C13/20 D11/21

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EnglishDSSSB PGT 2021

Q78.If a coin is tossed (m + n) times (where m > n), then the probability of at least m consecutive heads is -

An n +1 2 +1 Bn m + 2 2 +1 Cm 2 + n 2 +1 Dm m +1 2 +1

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EnglishDSSSB PGT 2021

Q79.Which one of the following statements is false?

AData that are on nominal scale are presented using frequency tables BPie charts are better than bar graphs for comparing relative sizes CThe scatter - plot is the basic graphic tool for investigating relationship between two intervals or ratio scaled variables DMeans and standard deviation of ordinal data are meaning-less

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EnglishDSSSB PGT 2021

Q80.If random variable X had the probability function f(x) = () k x = 0,1,2,........... x! the value of k is __________

A1/e Be C−1/e De – 1

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