Questions Ask question Search Order By: ActiveClear Filter 1 Ans What are the different types of parabola? Solved148 viewsmathemerize Selected answer as best August 29, 2021 1 Ans If p is the length of the perpendicular from the origin to the line \(x\over a\) + \(y\over b\) = 1, then prove that \(1\over p^2\) = \(1\over a^2\) + \(1\over b^2\) Solved131 viewsmathemerize Selected answer as best August 29, 2021 1 Ans Find the distance between the line 12x – 5y + 9 = 0 and the point (2,1) Solved108 viewsmathemerize Selected answer as best August 29, 2021 1 Ans Prove that the sum of first n natural numbers is \(n(n+1)\over 2\) Solved108 viewsmathemerize Selected answer as best August 29, 2021 1 Ans Let \(a_n\) be the nth term of an AP. If \(\sum_{r=1}^{100}\) \(a_{2r}\) = \(\alpha\) and \(\sum_{r=1}^{100}\) \(a_{2r-1}\) = \(\beta\), then the common difference of the AP is Solved87 viewsmathemerize Selected answer as best August 5, 2021 1 Ans A man saves Rs 200 in each of the first three months of his service. In each of the subsequent months, his saving increases by Rs 40 more than the saving of immediately previous month. His total saving from the start of service will be Rs 11040 after Solved75 viewsmathemerize Selected answer as best August 5, 2021 1 Ans If 100 times the 100th term of an AP with non-zero common difference equal to the 50 times its 50th term, then the 150th term of AP is Solved61 viewsmathemerize Selected answer as best August 5, 2021 1 Ans Angle between asymptotes of hyperbola xy=8 is Solved85 viewsmathemerize Selected answer as best August 5, 2021 1 Ans The sum of the slopes of the tangent of the parabola \(y^2\)=4ax drawn from the point (2,3) is Solved76 viewsmathemerize Selected answer as best August 5, 2021 1 Ans If x, y and z are in AP and \(tan^{-1}x\), \(tan^{-1}y\) and \(tan^{-1}z\) are also in AP, then Solved75 viewsmathemerize Selected answer as best August 5, 2021 1 Ans The sum of first 20 terms of the sequence 0.7, 0.77, 0.777, ……. , is Solved69 viewsmathemerize Selected answer as best August 5, 2021 1 Ans Three positive integers form an increasing GP. If the middle term in this GP is doubled, then new numbers are in AP. Then the common ratio of GP is Solved71 viewsmathemerize Selected answer as best August 1, 2021 1 Ans If \((10)^9\) + \(2(11)^1(10)^8\) + \(3(11)^2(10)^7\) + …… + \(10(11)^9\) = \(K(10)^9\), then k is equal to Solved66 viewsmathemerize Selected answer as best August 1, 2021 1 Ans A biased coin with probability p, 0 < p < 1, of heads is tossed until a head appears for the first time. If the probability that the number of tosses required is even, is 2/5, then p is equal to Solved83 viewsmathemerize Selected answer as best July 30, 2021 1 Ans The probability of India winning a test match against the west indies is 1/2 assuming independence from match to match. The probability that in a match series India’s second win occurs at the third test is Solved73 viewsmathemerize Selected answer as best July 30, 2021 1 Ans A fair die is tossed eight times. The probability that a third six is observed on the eight throw, is Solved98 viewsmathemerize Selected answer as best July 29, 2021 1 Ans If A and B are two mutually exclusive events, then Solved100 viewsmathemerize Selected answer as best July 29, 2021 1 Ans A and B play a game, where each is asked to select a number from 1 to 25. If the two numbers match, both of them win a prize. The probability that they will not win a prize in a single trial is Solved105 viewsmathemerize Selected answer as best July 28, 2021 1 Ans In a class of 100 students. there are 70 boys whose average marks in a subject are 75. If the average marks of the complete class is 72, then what is the average of the girls? Solved97 viewsmathemerize Selected answer as best July 28, 2021 1 Ans A problem in mathematics is given to three students A, B, C and their respective probability of solving the problem is \(1\over 2\), \(1\over 3\) and \(1\over 4\). Probability that the problem is solved is Solved92 viewsmathemerize Changed status to publish July 27, 2021 1 2 3 … 7 8 Next »