Kerala PSC Maths Questions and Answers 9

This page contains Kerala PSC Maths Questions and Answers 9 for psc exam preparations in Malayalam and English.

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161. What is the next number in this series 4, 9, 25, 49, 121, 169

Answer: 289

162. വിട്ടുപോയ പദം കാണുക
1,6,12,19,27, _____

Answer: 36

163. ഒരു ഫുട്ബോൾ ക്യാമ്പിൽ 100 പേർക്ക്, 60 ദിവസത്തേക്കുള്ള ഭക്ഷണം ഉണ്ട്. എന്നാൽ 20 പേർ പുതുതായി ജോയിൻ ചെയ്താൽ ഇപ്പോഴത്തെ ഭക്ഷണം എത്ര ദിവസത്തേക്ക് തികയും?

Answer: 50

164. 12 2 =144 ആയാല്‍ 1.44 ന്‍റെ വിലയെത്ര ?

Answer: 0.12

165. 0.00003 * 0.11 =

Answer: 0.0003

166. Rs. 6500 were divided equally among a certain number of persons. Had there been 15 more persons each would have got Rs. 30 less. The original number of persons was—

Answer: 50

167. A word given in Capital Letters is followed by four answer words. Out of these only one can be formed by using the letters of the given words. Find out that word— ENVIRONMENT

Answer: MINENT

168. ഏറ്റവും ചെറിയ ഭിന്ന സംഖ്യ ഏതു ? *

Answer: 1/5

169. . Insert the next number in the series 4, 8, 14, 22, 32, ……………….

Answer: 62

170. A ship 55 km from the shore springs a leak which admits 2 tonnes of water in 6 minutes, 80 tonnes would suffice to sink her, but the pumps can throw out 12 tonnes an hour. The average rate of sailing that she may just reach the shore as she begins to sink is:

Answer: 5.5 km/hSol. In 1 h water entered into shop = (20 – 12) = 8 tonnes Now, it will take 10 hrs to allow to enter 80 tonnes of water into ship and in this time ship has to cover 55 km of distance. Hence, required speed = 5.5 km/h.

171. A boat travels upstream from B to A and downstream from A to B in 3 h. If the speed of the boat in still water is 9 km/h and the speed of the current is 3 km/h, what distance between A and B?

Answer: 12 km

172. Speed of a swimmer when moving in the direction perpendicular to the direction of the current is 16 km/h, speed of the current is 3 km/h. So the speed of the swimmer against the current will be (in km/h):

Answer: 10Sol. Speed of swimmer = 16 – 3 = 13 km/h. ∴ Speed of swimmer against the current = 13 – 3 = 10 km/h.

173. P, Q, R are three towns on a river which flows uniformly. Q is equidistant from P and R. A man rows from P to Q and back in 10 hrs. He can row from P to R(upstream) in 4 hrs. The ratio of speed of man in still water to the speed of the current is

Answer: 5 : 3

174. Speed of a man is 10 km/h in still water. If the rate of current is 3 km/h, then the effective speed of the man upstream is:

Answer: 7 km/h

175. 20,18,22,20,24,22,26 _____

Answer: 24

176. ഒരു വരിയിൽ ജയന്റെ റാങ്ക്‌ മുകളിൽ നിന്ന് 10-മതും താഴെ നിന്ന് 20 -മതും ആണെങ്കിൽ ആ വരിയിൽ ആകെ എത്ര കുട്ടികളുണ്ട്‌ ?

Answer: 29

177. If E = 5 and HOTEL = 60, how will you code LAMB?

Answer: 28

178. ഒറ്റയാനെ കണ്ടെത്തുക10, 30, 130, 340

Answer: 340

179. മൂന്ന് കാറുകളുടെ വേഗതയുടെ അംശബന്ധം 3:4:5 ആണ്. ഒരു നിശ്ചിത ദൂരം സഞ്ചരിക്കാന്‍ അവരെടുക്കുന്ന സമയത്തിന്‍റെ അംശബന്ധം എത്ര?

Answer: 20:15:12

180. Replace the question mark (?) in the following series? 5, 12, 38, 135, ?, 2875

Answer: 568

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