Math Chapter Wise

EnglishRPSC PGT 2022

Q61.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

Q62.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

Q63.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

Q64.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

Q65.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

Q66.An ogive is used to determine

AMean BMedian CGeometric mean DHarmonic mean

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EnglishDSE TGT 2022

Q67.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

Q68.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

Q69.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

Q70.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

Q71.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

Q72.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

Q73.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

Q74.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

Q75.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

Q76.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

Q77.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

Q78.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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EnglishDSSSB PGT 2021

Q79.Which of the following comes under probability distribution?

A() x 2 f x =,x =1,2,3,4 2 − B() 1 g x =,x = 1,2,3,4 4 C() 2 x h x =,x = 1,2,3,4 25 D() x 2 f x =,x =1,2,3,4 5 −

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EnglishDSSSB PGT 2021

Q80.The frequency distribution of the amount of rainfall in December in a certain region for a period of 30 years is given as __________ Rainfall (in inches) Number of years 2.0 - 4.0 3 4.0 - 6.0 6 6.0 - 8.0 8 8.0 - 10.0 8 10.9 - 12.0 5 The mean amount of rainfall in inches is -

A7.30 B7.25 C7.40 D8.40

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