Q.8029·Miscellaneous·2017·EasyIf a, b, c are non-zero real numbers, then the inverse of the matrix A = [a 0 0] [0 b 0] [0 0 c] is equal toView question
Q.8030·Miscellaneous·2017·EasyA tea party is arranged for 16 people along two sides of a long table with eight chairs on each side. Four particular men wish to sit on one particular side and two particular men on the other side. The number of ways they can be seated isView question
Q.8031·Miscellaneous·2017·EasyIf |z - 4/z| = 2, then the maximum value of |z| is equal toView question
Q.8032·Miscellaneous·2017·EasyThe angle of elevation of a stationary cloud from a point 25 m above a lake is 15° and the angle of depression of its image in the lake is 45°. The height of the cloud above the lake level isView question
Q.8033·Miscellaneous·2017·EasyThe value of tan 9° - tan 27° - tan 63° + tan 81° is equal toView question
Q.8034·Miscellaneous·2017·EasyThe angles of elevation of the top of a tower from the top and foot of a pole are respectively 30° and 45°. If hₜ is the height of the tower and hₚ is the height of the pole, then which of the following are correct? 1. (2hₚhₜ)/(3+√3) = (hₚ²) 2. (hₜ - hₚ)/(√3+1) = hₚ/2 3. (2(hₚ + hₜ))/(hₚ) = 4+√3 Select the correct answer using the code given below.View question
Q.8035·Miscellaneous·2017·EasyStatement I: A body weighs less on a hill top than on earth’s surface even though its mass remains unchanged. Statement II: The acceleration due to gravity of the earth decreases with height.View question
Q.8036·Miscellaneous·2017·EasyIf the data are moderately non-symmetrical, then which one of the following empirical relationships is correct?View question
Q.8037·Miscellaneous·2017·EasyA sample of 5 observations has mean 32 and median 33. Later it is found that an observation was recorded incorrectly as 40 instead of 35. If we correct the data, then which one of the following is correct?View question
Q.8038·Miscellaneous·2017·EasyIf two fair dice are thrown, then what is the probability that the sum is neither 8 nor 9?View question
Q.8039·Miscellaneous·2017·EasyThe mean and standard deviation of a binomial distribution are 12 and 2 respectively. What is the number of trials?View question
Q.8040·Miscellaneous·2017·EasyA card is drawn from a well-shuffled ordinary deck of 52 cards. What is the probability that it is an ace?View question
Q.8041·Miscellaneous·2017·EasyConsider the following statements : Statement 1 : Range is not a good measure of dispersion. Statement 2 : Range is highly affected by the existence of extreme values. Which one of the following is correct in respect of the above statements?View question
Q.8042·Miscellaneous·2017·EasyIn an examination, 40% of candidates got second class. When the data are represented by a pie chart, what is the angle corresponding to second class?View question
Q.8043·Miscellaneous·2017·EasyIf two regression lines between height (x) and weight (y) are 4y - 15x + 410 = 0 and 30x - 2y - 825 = 0, then what will be the correlation coefficient between height and weight?View question
Q.8044·Miscellaneous·2017·EasyA point is chosen at random inside a circle. What is the probability that the distance is closer to the centre of the circle than to its boundary?View question
Q.8045·Miscellaneous·2017·EasyThe mean weight of 150 students in a certain class is 60 kg. The mean weight of boys in the class is 70 kg and that of girls is 55 kg. What is the number of boys in the class?View question
Q.8046·Miscellaneous·2017·EasyA question is given to three students A, B and C whose chances of solving it are 1/2, 1/3 and 1/4 respectively. What is the probability that the question will be solved?View question