Q.11575·Miscellaneous·2014·EasyThe mean and standard deviation of 100 items are 50, 5 and that of 150 items are 40, 6 respectively. What is the combined standard deviation of all 250 items?View question
Q.11576·Miscellaneous·2014·EasyThe mean and standard deviation of 100 items are 50, 5 and that of 150 items are 40, 6 respectively. What is the variance of all the 250 items?View question
Q.11577·Miscellaneous·2014·EasyConsider the curve y = e^(2x). What is the slope of the tangent to the curve at (0, 1)?View question
Q.11578·Miscellaneous·2014·EasyWhat is the solution of dy/dx + 2y = 1 satisfying y(0) = 0?View question
Q.11581·Miscellaneous·2014·EasyA line passes through the points (6, -7, -1) and (2, -3, 1). What are the direction ratios of the line?View question
Q.11582·Miscellaneous·2014·EasyLet a vector r make angles 60°, 30° with x and y axes respectively. What are the direction cosines of r?View question
Q.11583·Miscellaneous·2014·EasyLet a vector r make angles 60°, 30° with x and y axes respectively. What angle does r make with z-axis?View question
Q.11584·Miscellaneous·2014·EasyThe vertices of a triangle ABC are A(2, 3, 1), B(-2, 2, 0) and C(0, 1, -1). What is the magnitude of the line joining mid points of the sides AC and BC?View question
Q.11585·Miscellaneous·2014·EasyThe vertices of a triangle ABC are A(2, 3, 1), B(-2, 2, 0) and C(0, 1, -1). NDA Mathematics 2014 (I)View question
Q.11586·Miscellaneous·2014·EasyThe vertices of a triangle ABC are A(2, 3, 1), B(-2, 2, 0) and C(0, 1, -1). What is the cosine of angle ABC?View question
Q.11587·Miscellaneous·2014·EasyA straight line passes through (1, -2, 3) and is perpendicular to the plane 2x + 3y - z = 7. What is the image of the point (1, -2, 3) in the plane?View question
Q.11588·Miscellaneous·2014·EasyA straight line passes through (1, -2, 3) and is perpendicular to the plane 2x + 3y - z = 7. Where does the line meet the plane?View question
Q.11589·Miscellaneous·2014·EasyA straight line passes through (1, -2, 3) and is perpendicular to the plane 2x + 3y - z = 7. What are the direction ratios of normal to plane?View question
Q.11590·Miscellaneous·2014·EasyWhich one among the following is not true about Bal Gangadhar Tilak?View question
Q.11591·Miscellaneous·2014·EasyUnder which of the following Acts is the National Population Register being created?View question
Q.11592·Miscellaneous·2014·EasyThe Scheduled Castes and Scheduled Tribes (Prevention of Atrocities) Act, 1989 may be seen as giving effect to which of the following Fundamental Rights? 1.Equality before the Law 2.Right against Discrimination 3.Abolition of Untouchability 4.Right to Freedom of Religion Select the correct answer using the code given below.View question