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You are not logged in. #51 20060418 00:38:42
Re: Oral puzzles116. The ratio of the common differences of two series in Arithmetic Progression is 4:9. If the ratio of their sums of the first 25 terms of the two series is 4:9, what is the ratio of their sums of the first 75 terms? Character is who you are when no one is looking. #52 20060418 14:17:05
Re: Oral puzzles121. A person has four hats, 6 shirts and 4 trousers. He is always with his hat on. He also has 3 ties, but doesn't always wear a tie. In how many different ways could he dress himself up for a party? Character is who you are when no one is looking. #53 20060419 15:58:44
Re: Oral puzzles124. The length of a chord of a circle at a distance of 5 cm from the centre is 24 cm. What is the diameter of the circle? 127. If the areas of two spheres are in the ratio 4:9, what would be the ratio of their volumes? 128. The length of a hall is 4/3 times its breadth. If the area of the hall is 675 square meters, what is the difference between the lengt and breadth of the hall? 129. The volume of a cube is 216 cubic centimeters. It is moulded into a cuboid having one edge equal to 6 cm. What is the number of ways it can be done in such a way that the lengths of the sides are integral values? 130. 6x²+ax+7 when divided by x2 gives remainder 13. What is the value of a? 131. What is the value of k for which the equation 2kx²40x+25=0 has equal roots? 132. A cuboid is formed of 3 edges measuring 3 cm, 4 cm, and 5 cm. It is sliced into two identical solids by a plane through a diagonal of the smallest of the faces. What would the surface area of the sliced section be? 133. A solid body is made up of a cylinder of radius r and height r, a cone of base radius r and height r is fixed to the cylinder's one base and a hemisphere of radius r to its other base. If the value of r is 2 units, what would be the total volume of the body? Character is who you are when no one is looking. #54 20060420 12:37:44
Re: Oral puzzles124. 26 #55 20060420 12:43:58
Re: Oral puzzles121. 4*6*4*4 ( assuming he won't go to the party without his shirt and trousers ) #56 20060420 14:10:29
Re: Oral puzzlesrm, Character is who you are when no one is looking. #57 20060420 14:24:08
Re: Oral puzzles134. The speed of a metro train is 54 kilometers per hour. However, the effective speed after including the time of stoppage at stations is 45 kilometers per hour. How many minutes an hour does the train stop? 137. A and B can weave a carpet in 10 days and 15 days respectively. They begine to work together but B leaves after 2 days. In how many days would A complete the work? 138. Two cars were sold for $ 9,900 each. In one transaction there was a gain of 10% and in the other, a loss of 10% was incurred. What was the net effect of the two transactions together? 139. What is the difference between the Simple Interest and Compund Interest compunded annually, bot the at the rate of 12% per annum, for two years? 140. Of the 30 students in a class, the average age of the first ten is 12.5 years and the average age of the next twenty is 13.1 years. What is the average age of the whole class? Character is who you are when no one is looking. #58 20060421 14:55:56
Re: Oral puzzles141. If what is the value of ? 142. What is the remainder when is divided by (x2)? 143. If the value of then what would be the value of 144. If p and q are the roots of the equation x²+ax+b=0, then what are the roots of the equation x²ax+b=0? 145. 1 man or 2 women or 3 boys can do a piece of work in 55 days. In how many days would 1 man, 1 woman and 1 boy do the same work? 146. A circle of 5 cm radius is drawn and another circle of 3 cm radius is cut out of this circle. What is the radius of a circle which has the same area as the area of the bigger circle excluding the cut one? 147. What is the value of (tan A + cot A + sec A)(tan A + cot A  sec A)? 148. A spherical iron ball is dropped into a cylindrical vessel of base diameter 14 cm. The water level increases by 9 1/3 cm. What is the radius of the ball? 149. The radius of a cylindrical cistern is 10 meters and its height is 15 meters. Initially the cistern is empty. The cistern is filled with water through a pipe whose diameter is 50 centimeters. Water is flowing out of the pipe with a velocity of 5 meters per second. How many minutes would it take for the cistern to be filled? 150. A sphere of radius 13 cm is cut by a plane whose distance from the center of the sphere is 5 cm. What is the circumference of the plane circular section? Character is who you are when no one is looking. #59 20060422 14:40:47
Re: Oral puzzles151. Two circles of diamters 74 cm and 40 cm have a common chord of length 24 cm. What is the distance between the centers of the circles? what is the value of ? 160. If what is the value of x? Character is who you are when no one is looking. #60 20060423 15:48:33
Re: Oral puzzles161. If what is the value of tan²θ? 162. What is the maximum value of sinθ + cosθ? 163. From noon to 4.24 pm, what's the angle covered by the hour hand of the clock? 164. If what is the value of x? 165. What is the value of ? 166. If what is the value of x? 167. In the equation one root is the reciprocal of the other. What is the alue of a? 168. If waht is the value of x? 169. Find the samller of the two numbers whose sum is 35 and difference is 5. 170. If 2xy=4 and x+y=5, what is the value of xy? Character is who you are when no one is looking. #61 20060424 14:22:40
Re: Oral puzzles171. What is the sum of all odd numbers from 1 to 32? for any positive integer n? 180. How many positive integers less than or equal to 1200 are divisible by both 6 and 8? Character is who you are when no one is looking. #62 20060425 00:05:56
Re: Oral puzzles180. 50 IPBLE: Increasing Performance By Lowering Expectations. #63 20060425 00:14:10
Re: Oral puzzles179. you said "for any positive integer n", so this digit must be the digit when n=1. IPBLE: Increasing Performance By Lowering Expectations. #64 20060425 00:15:56
Re: Oral puzzles178. (2n+1)²1=2n(2n+2)=4n(n+1), so 8/(2n+1)²1 IPBLE: Increasing Performance By Lowering Expectations. #65 20060425 00:22:55
Re: Oral puzzlesWell done, krassi_holmz! Character is who you are when no one is looking. #66 20060425 03:27:32
Re: Oral puzzles177.n^3nn1)n(n+1), divisible by 3!=6 IPBLE: Increasing Performance By Lowering Expectations. #67 20060425 03:29:14
Re: Oral puzzles176. What is the value of y is 1y3y6 is divisible by 11? IPBLE: Increasing Performance By Lowering Expectations. #68 20060425 03:32:14
Re: Oral puzzles175. When two numbers are divided by a certain divisor, they give remainders of 35 and 30 respectively. When the sum of the two numbers is divided by the same divisor, the remainder obtained is 20. What is the divisor? IPBLE: Increasing Performance By Lowering Expectations. #69 20060425 03:34:09
Re: Oral puzzles174. Which is the number nearest to 7671 that is exactly divisible by 38? IPBLE: Increasing Performance By Lowering Expectations. #70 20060425 03:35:36
Re: Oral puzzles174. 7676 Last edited by Patrick (20060425 03:39:36) #71 20060425 03:36:22
Re: Oral puzzles173. When a number is divided by 296, the remainder is 75. What would the remainder be when the number is divided by 37? IPBLE: Increasing Performance By Lowering Expectations. #72 20060425 03:38:46
Re: Oral puzzles172. What is the unit digit in the product 207x781x39x94? IPBLE: Increasing Performance By Lowering Expectations. #73 20060425 03:40:33
Re: Oral puzzles171. What is the sum of all odd numbers from 1 to 32? IPBLE: Increasing Performance By Lowering Expectations. #74 20060425 03:42:59
Re: Oral puzzles
y can't be 11 because the remainder must be > of the divisor. IPBLE: Increasing Performance By Lowering Expectations. #75 20060425 03:45:49
Re: Oral puzzles170. If 2xy=4 and x+y=5, what is the value of xy? IPBLE: Increasing Performance By Lowering Expectations. 