In a group of 25 students, 13 can speak English, 12 can speak Hindi and 6 speak neither. How many can speak (i) Both English and Hindi ? (ii) Only Hindi ? (iii) Exactly one of the two languages ?
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If A and B are two independent events, the probability that both A and B occur is 1/8 are the probability that neither of them occours is 3/8. Find th
We have, `P(AnnB)=1/8and P(barAnnbarB)=3/8` `thereforeP(A)P(B)=1/8and P(barA)P(barB)=3/8` `" "[therefore"A and B are independent"]` Now, `P(barAnnbarB)=3/8` `implies1-P(AnnB)=3/8` `or 1-(P(A)+P(B)-P(AnnB))=3/8` `or1-(P(A)+P(B))+1/8=3/8` `orP(A)+P(B)=3/4` The equation whose roots are P(A) and P(B) is `x^(2)-x{P(A)+P(B)}+P(A)P(B)=0` `or...
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Menstrual cycle of human female is affected by (A) LH only (B) Estrogen only (C) FSH only (D) LH, FSH and Estrogen
Correct option is: (D) LH, FSH and Estrogen
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One dimensional array may have…….. A. Only columns B. Only rows C. Only one cell D. Both columns and rows
Correct option is: D. Both columns and rows
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(i) An ………………… is a group or category to which people feel they do not belong. (in-group / out-group / voluntary group)
(i) out-group (ii) Voluntary group (iii) secondary (iv) reference group (v) Customary (vi) Mores
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In a group of `1000` people, there are `750` people, who can speak Hindi and `400` people, who can speak Bengali. `(i)` Find number of people who can
Correct Answer - `(i)600 (ii) 250 (iii) 150 `
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In a club 45% plays cricket, 20% plays only football. Find the percentage of members who plays only cricket if 10% play both. (Each plays at least one
Correct Answer - 0.35
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In a class of 80 students, 55 students passed in mathematics and 60 passed in chemistry. 10 stu-dents failed in both mathematics and chemistry. (i) Ho
Correct Answer - (i) 45 , (ii) 25
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`45%` of the student of a class participated in Physics Olympiad Math Olympiad. 4 students participated in both. Find how many students. (i) Are there
Correct Answer - (i) 40 , (ii) 18 , (iii) 36
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In a hostel 60% of the students read Hindi news paper, 40% read English news paper and 20% read both Hindi and English news papers. A student is selec
Correct Answer - (i) `1/5` (ii) `1/3` (iii) `1/2`
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For the following measurements in which the true value is 4.0 g, find the CORRECT statement. (A) Results of both the students are neither accurate.
Option : (B) Results of student A are both precise and accurate.
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