Q.12781·Miscellaneous·2013·EasyFour coins are tossed simultaneously. What is the probability of getting exactly 2 heads?View question
Q.12783·Miscellaneous·2013·EasyMarks obtained by 7 students in a subject are 30, 55, 75, 90, 50, 60, 39. The number of students securing marks less than the mean marks isView question
Q.12784·Miscellaneous·2013·EasyThe average marks obtained by the students in a class are 48. If the average marks obtained by 25 boys are 40 and the average marks obtained by the girl students are 48, then what is the number of girl students in the class?View question
Q.12785·Miscellaneous·2013·EasyIn how many ways can the letters of the word 'GLOOMY' be arranged so that the two O's should not be together?View question
Q.12786·Miscellaneous·2013·EasyConsider the following frequency distribution : If the total of the frequencies is 100 and mode is 25, then which one of the following is correct?View question
Q.12787·Miscellaneous·2013·EasyWhich one of the following vectors is normal to the vector i^ + j^ + k^ ?View question
Q.12788·Miscellaneous·2013·EasyConsider the following statements : 1. Both variance and standard deviation are measures of variability in the population. 2. Standard deviation is the square of the variance. Which of the above statements is/are correct?View question
Q.12790·Miscellaneous·2013·EasyThe standard deviation of the observations 5, 5, 5, 5, 5 isView question
Q.12791·Miscellaneous·2013·EasyIf two lines of regression are perpendicular, then the correlation coefficient r isView question
Q.12792·Miscellaneous·2013·EasyThe marks obtained by 13 students in a test are 10, 3, 10, 12, 9, 7, 9, 6, 7, 10, 8, 6, 7. The median of this data isView question
Q.12793·Miscellaneous·2013·EasyWhat is the area of the triangle whose vertices are (0, 0, 0), (1, 2, 3) and (-3, -2, 1)?View question
Q.12794·Miscellaneous·2013·EasyWhat is the distance between the planes x - 2y + z - 1 = 0 and -3x + 6y - 3z + 2 = 0?View question
Q.12795·Miscellaneous·2013·EasyIf a line makes 30° with the positive direction of x-axis, angle β with the positive direction of y-axis and angle γ with the positive direction of z-axis, then what is cos²β + cos²γ equal to?View question
Q.12796·Miscellaneous·2013·EasyConsider the following statements in respect of a function f(x): 1. f(x) is continuous at x = a iff limₓ→ₐ f(x) exists. 2. If f(x) is continuous at a point, then 1/f(x) is also continuous at that point. Which of the above statements is/are correct?View question
Q.12798·Miscellaneous·2013·EasyConsider the following statements: 1. limₓ→₀ (1/x) does not exist. 2. limₓ→₀ (sin x / x) exists. Which of the above statements is/are correct?View question