Kerala PSC Maths Questions and Answers

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

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1. Ram bought a Bag at 20% discount on its original price. He sold it with 40% increase on the price he bought it. The new price is by what percent more than the original price

Answer: 12

2. 1500 രൂപയുള്ള ഒരു സൈക്കിള്‍ 10ശതമാനം ഡിസ്കൗണ്ട് അനുവദിച്ചു വിറ്റാല്‍ വാങ്ങുന്ന ആള്‍ അതിനെത്ര രൂപ നല്‍കണം ?

Answer: രൂ 1150

3. When a number is divided by 3,the quotient is 42.What is the number?

Answer: 126

4. Which is the next in the series 2,6,14,30,62,----------

Answer: 126

5. A radio isotope has a half life of 75 years. The fraction of the atoms of the element that would decay in 150 years will be :

Answer: 75%

6. Minimum pass for an examination is 30 percent. Rajan got 50 marks but he failed due to a shortage of 10 marks. Then the total marks is :

Answer: 240

7. In a stream that is running at 2 km/h, a man goes 10 km upstream and comes back to the starting point in 55 minutes. Find the speed of the man in still water.

Answer: 22 km/h

8. 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 Sol. Speed of man in still water = 10 km/h Speed of current = 3 km/h ∴ Speed of man upstream = 10 – 3 = 7 km/h

9. ഇന്നലെയുടെ തലേന്ന് ചൊവ്വാഴ്ചയെങ്കില്‍ നാളെയുടെ പിറ്റേന്ന് ഏതു ദിവസം.

Answer: ശനി

10. ഒരു വര്‍ഷത്തിലെ മാര്‍ച്ച് 25 ചൊവ്വാഴ്ചയാണെങ്കില്‍ ആ മാസത്തില്‍ എത്ര ഞായറാഴ്ചയുണ്ട് ?

Answer: 5

11. What is the greatest number which divides 24, 28 and 34 and leaves the same remainder in each case?

Answer: 2

12. The HCF of two numbers is 23 and the other two factors of their LCM are 13 and 14. What is the largest number?

Answer: 322

13. The average of six numbers is x and the average of three of these is y. If the average of the remaining three is z, then

Answer: 2x = y + z

14. At his usual rowing rate, Ram can travel 12 miles downstream in a certain river in 6 hrs less than it takes him to travel the same distance upstream. But if he could double his usual rowing rate for this 24 mile round trip, the downstream 12 miles would then take only one hour less than the upstream 12 miles. What is the speed of the current in miles per hour?

Answer: 8/3

15. It was FRIDAY on 4th December, 2015. What was the day on 4th December, 2016 ?

Answer: Sunday

16. Arjun walks 2 kms northwards and then he turns right and moves 3 kms. He again turns right and goes 2 kms and turns his left and starts walking straight. In which direction he is walking now ?

Answer: East

17. The difference between compound interest and simple interest for an amount of Rs. 40,000 for 2 years at 5% interest rate is

Answer: 100

18. If m = ax, n= ay and mynx = a2/z then value of xyz __

Answer: 1

19. root (10 )^2

Answer: 10

20. കൂട്ടത്തില്‍ ബന്ധമില്ലാത്ത സംഖ്യ കണ്ടെത്തുക.

Answer: root 425

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