Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ • π ƒ ¹ ² ³ °
 

You are not logged in. #251 20090216 00:11:29
Re: *** ProblemsAnswer to #183: Character is who you are when no one is looking. #252 20090216 18:00:45
Re: *** Problems#184. Find the value of x if #185. If one root of is 4, while the equation has equal roots, what is the value of q? #186. If x, y, and z are odd positive integers, then which of the following is not necessarily true? (1) is odd. (2) is even. (3) is odd. (4) is even. Character is who you are when no one is looking. #253 20090217 15:53:01
Re: *** Problems#187. What is/are the value(s) of #188. The points (2, 2), (8, 4), (4, 6), and (1, 1) in order are the vertices of which one of the following quadrilaterals? (1) Square (2) Rhombus (3) Rectangle (4) Trapezium Character is who you are when no one is looking. #254 20090218 01:44:21
Re: *** Problems#189. What is the xcoordinate of the point on the tangent of the given curve where the tangent is parallel to the xaxis? #190. What is the degree of the differential equation ? Character is who you are when no one is looking. #255 20090220 01:30:07
Re: *** Problems#191. There are two candles of the same length initially. The first candle can burn for 24 hours while the second can burn for 16 hours. Both of them are lit at the same time. After sometime, it was found that one of the candles was twice as long as the other. For how long had the candles been burning? Character is who you are when no one is looking. #256 20090220 08:43:20#257 20090220 15:43:52
Re: *** ProblemsAnswers to #185, #187, #191, #192, and #193: Character is who you are when no one is looking. #258 20090222 00:05:17
Re: *** Problems#194. If the sum of the squares of the distances of the points (x,y,z) from the points (a,0,0), and (a,0,0) is 2c², then which one of the following is correct? Character is who you are when no one is looking. #259 20090222 00:31:25
Re: *** Problems#196. If the sum of the squares of the roots of the equation is 5, then what is the value of p? Character is who you are when no one is looking. #260 20090222 13:34:47#261 20090222 16:24:55
Re: *** ProblemsAnswer to #195: #200. What is the degree of the equation ? Character is who you are when no one is looking. #262 20090223 19:35:42
Re: *** Problems#201. If a, b are real, what is the value of #202. If z = 1 + i, what is the inverse of z²? #203. What are the coordinates of a point equidistant from the points (a,0,0), (0,a,0), (0,0,a), and (0,0,0)? #204. A line makes 45° with the positive xaxis and makes equal angles with the positive y and z axes respectively. What is the sum of the three angles which the lin makes with the positive x, y, and z axes? #205. A particle moves in a straight line with a velocity given by v = x + 1 9x being the displacement). What is the time taken by the particle to traverse a distance of 99 meters? #206. What is the value of cosec(2A)  cot(2A)? #207. What is the area of the triangle bound by the lines y = 0, x + y = 0 and x + 4 = 0? #208. A person saves $135 in the first year, $150 in the second year, $165 in the third, thus increasing his saving by $15 every year. After how many years would his total savings be $5500? #209. What is the equation of the line which passes through (4, 5) and is parallel to the line 3x+4y+5 = 0? #210. What is the locus of a point which is equidistant from (1,2,3), and (3,2,1)? Character is who you are when no one is looking. #263 20090224 16:11:57
Re: *** Problems#211. If the roots of the equation are two conseutive integers, then what is the value of ? #212. What is the common root in the equations ? #213. If , what is the value of ? #214. If the probability of a defective bolt is 1/10, what are the mean and variance for the distribution of defective bolts in a total of 400? Character is who you are when no one is looking. #264 20090225 01:01:34
Re: *** Problems#215. What is the greatest coefficient in the expansion of ?#216. If the equations 4x + 7y = 10 and 10x + ky = 25 represent coincident lines, what is the value of k? Character is who you are when no one is looking. #265 20090225 01:21:53
Re: *** Problems#217. If (x + yi) (3  4i) = 5 + 12i, then what is #218. What is the value of ? Character is who you are when no one is looking. #266 20090225 02:23:32
Re: *** Problems#219. If the sum of the first n terms of an Arithmetic Progression is Pn+Qn², where P and Q are constants, then what is the common difference of the Arithmetic Progression? Character is who you are when no one is looking. #267 20090225 06:37:05#268 20090226 02:12:39
Re: *** ProblemsAnswer to #221: #224. What is the number of diagonals of a polygon having n sides? #225. A polygon has 44 diagonals. How many sides does it have? Character is who you are when no one is looking. #269 20090228 01:28:36
Re: *** Problems#226. What is the coefficient of the middle term in the expansion of #227. What is the power of x occuring in the seventh term of the expansion of ? #228. What is the coefficient of in ? #229. What is the value of ? Character is who you are when no one is looking. #270 20090301 02:01:22
Re: *** Problems#230. What is the value of tan 15° tan 25° tan 45° tan 65° tan 75°? #232. What is the value of ? #233. What is the value of ? #234. if , then what is the value of ? Character is who you are when no one is looking. #271 20090301 17:27:50
Re: *** Problems#235. What is the area of the smallest square tht would enclose a regular hexagon of side 1 unit? Character is who you are when no one is looking. #272 20090302 18:17:48
Re: *** Problems#237. What value(s) of x is/are the solution of Character is who you are when no one is looking. #273 20090303 01:26:54
Re: *** Problems#238. What is the number of real roots of the equation #239. Two veseels of equal volume contain milk and water in the ratio 3:2 and m:n. If the contents are poured into a bigger container, what would the ratio of milk to water in the new container be? Character is who you are when no one is looking. #274 20090305 03:19:49
Re: *** Problems#240. The daily work of two men is equal to that of three women or that of four youngsters. By employing 14 men, 12 women, and 12 youngsters, a certain work can be finishedin 24 days. if the work has to be completed in 14 days and only men are available as additional labor, how many of them would be required? Character is who you are when no one is looking. #275 20090305 04:21:54
Re: *** Problems
Last edited by JaneFairfax (20090305 06:55:47) 