Q.3979·Miscellaneous·2021·EasyWhat is the mean deviation of the first 10 even natural numbers?View question
Q.3980·Miscellaneous·2021·EasyIf the harmonic mean of 60 and x is 48, then what is the value of x ?View question
Q.3981·Miscellaneous·2021·EasyIf g is the geometric mean of 2, 4, 8, 16, 32, 64, 128, 256, 512, 1024, then which one of the following is correct?View question
Q.3982·Miscellaneous·2021·EasyFor the set of numbers x, x, x+2, x+3, x+10 where x is a natural number, which of the following is/are correct? 1. Mean > Mode 2. Median > Mean Select the correct answer using the code given below.View question
Q.3983·Miscellaneous·2021·EasyThe locus of a point P(x, y, z) which moves in such a way that z = 7 is aView question
Q.3984·Miscellaneous·2021·EasyConsider the following statements : 1. A line in space can have infinitely many direction ratios. 2. It is possible for certain line that the sum of the squares of direction cosines can be equal to sum of its direction cosines. Which of the above statements is/are correct?View question
Q.3985·Miscellaneous·2021·EasyThe number of spheres of radius r touching the coordinate axes isView question
Q.3986·Miscellaneous·2021·EasyABCDEFGH is a cuboid with base ABCD. Let A(0, 0, 0), B(12, 0, 0), C(12, 6, 0) and G(12, 6, 4) be the vertices. If α is the angle between AB and AG; β is the angle between AC and AG, then what is the value of cos2α + cos2β?View question
Q.3987·Miscellaneous·2021·EasyTwo regression lines are given as 3x -4y+8=0 and 4x - 3y– 1= 0. Consider the following statements : 1. The coefficient of correlations r is 3/4. 2. The means of x and y are 3 and 4 respectively. Which of the above statements is/are correct?View question
Q.3988·Miscellaneous·2021·EasyTwo regression lines are given as 3x − 4y + 8 = 0 and 4x − 3y − 1 = 0. Consider the following statements : 1. The regression line of y on x is y = (3/4)x + 2 . 2. The regression line of x on y is x = (3/4)y + 1/4 . Which of the above statements is/are correct?View question
Q.3989·Miscellaneous·2021·EasyIn a cricket match, a batsman hits a six 8 times out of 60 balls he plays. What is the probability that on a ball played he does not hit a six?View question
Q.3990·Miscellaneous·2021·EasyA problem is given to three students A, B and C, whose probabilities of solving the problem independently are 1/2, 3/4 and p respectively. If the probability that the problem can be solved is 29/32, then what is the value of p?View question
Q.3991·Miscellaneous·2021·EasyWhen the measure of central tendency is available in the form of mean, which one of the following is the most reliable and accurate measure of variability?View question
Q.3992·Miscellaneous·2021·EasyIf P(A|B) < P(A), then which one of the following is correct?View question
Q.3993·Miscellaneous·2021·EasySeven white balls and three black balls are randomly placed in a row. What is the probability that no two black balls are placed adjacently?View question
Q.3995·Miscellaneous·2021·EasyConsider the following relations for two events E and F: 1. P(E ∩ F) ≥ P(E) + P(F) − 1 2. P(E ∪ F) = P(E) + P(F) + P(E ∩ F) 3. P(E ∪ F) ≤ P(E) + P(F) Which of the above relations is/are correct?View question