Math Chapter Wise

EnglishHaryana TGT 2020

Q261.Variance is independent of change of:

AScale only BOrigin only COrigin and scale both DNot in origin and not in scale

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EnglishHaryana TGT 2020

Q262.A statistical measure which cannot be determine graphically is:

AMode BMean CMedian DHarmonic Mean

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EnglishHaryana TGT 2019

Q263.The mean median of a data are respectively 20 and 22. The value of mode is:

A20 B26 C22 D21

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EnglishHaryana TGT 2019

Q264.The mean of 'n' observations is x. If the first observation is increased by 1, the second by 2, the third by 3 and so on, then the new mean is equal to:

Ax (2n 1)/+ + B(n 1) x 2 + Cx (n 1)/+ + D(n 1) x 2 −

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EnglishHaryana TGT 2019

Q265.If the median of the data 24, 25, 26, (x+2), (x+3), 30, 31, 34 is 27.5, then x is equal to:

A27 B25 C28 D29

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EnglishHaryana TGT 2019

Q266.If mode of a series exceeds its mean by 12, then mode exceeds the median by:

A4 B6 C8 D10

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EnglishUKPSC GIC 2018

Q267.If A and B are mutually exclusive events, then P(A/B) is

AP(A) BP(B) C0 D() P A B P B ∩

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EnglishUKPSC GIC 2018

Q268.If P(A)= 0.4, P(B) = p, P(A∪ ∪ ∪B) = 0.6, then the value of p is (if A and B are independent events)

A2/3 B1/3 C3/4 D3/5

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EnglishUKPSC GIC 2018

Q269.Twelve balls are distributed among three boxes, then the probability that the first box will contain three balls is

A12 3 3 12 C 2 3 × B12 3 3 12 C 3 3 × C12 3 12 C 9 2 × D12 9 3 12 C 2 3 ×

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EnglishUKPSC GIC 2018

Q270.The die is thrown three times, if the first throw is a four, then the chance of getting 15 as the sum is

A1/18 B1/9 C1/6 D1/36

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EnglishUK SSSC LT 2020

Q271.The number of parameters in Binomial distribution is:

A1 B2 C3 D4

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EnglishHaryana TGT 2019

Q272.If ∪ = ∩ P(A B) P(A B) for any two events A and B, then:

AP(A) = P(B) BP(A) > P(B) CP(A) < P(B) DP(A) ≠ P(B)

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EnglishHaryana TGT 2019

Q273.If a number x is chosen from the number 1, 2, 3 and a number 'y' is chosen from the numbers 1, 4, 9 then P (xy<9) is equal to:

A7/9 B5/9 C2/3 D1/9

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EnglishHaryana TGT 2019

Q274.A number is selected at random from the numbers 3, 5, 5, 7, 7, 7, 9, 9, 9, 9. The probability that the selected number is their average, is:

A1/4 B1/3 C4/9 D3/10

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EnglishUK SSSC LT 2020

Q275.If probability ((())) ((()) 6 5 P,P, A B 11 11 = (()) 7 P AUB 11 = then the value of conditional probability B P A will be:

A4/11 B1/11 C1 D2/3

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EnglishUK SSSC LT 2020

Q276.A card is selected from a pack of 52 cards, then probability of being an ace card will be:

A2/13 B6/13 C4/13 D1/13

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EnglishHaryana PGT 2020

Q277.An urn contains 10 black and 5 white balls. Two balls are drawn from the urn one after the other without replacement. What is the probability that both drawn balls are black?

A2/7 B3/7 C4/7 D5/7

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EnglishHaryana PGT 2020

Q278.A man is known to speak truth 3 out of 4 times. He throws a die and reports that it is a six. Find the probability that it is actually a six:

A1/8 B2/8 C3/8 D4/8

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EnglishHaryana PGT 2019, 2020

Q279.If P(A) = 0.4 and P(B/A) = 0.5, then () ∪ P A B =

A0.6 B0.7 C0.8 D0.9

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EnglishHaryana TGT 2020

Q280.10 person are seated at a round table. The probability that two particular persons sit together is:

A1/5 B2/9 C3/7 D4/9

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