Kerala PSC Maths Questions and Answers Part 2

1. The average age of 12 students is 20 years. If one more student is included, the average is decreased by 1. What is the age of a new student? 

A) 6 years

B) 5 years

C) 7 years

D) 8 years

Answer: 7 years

Age of 12 students = 12 × 20 = 240

Average after adding new students’ age = 19

Age of 13 students ( including the new student)= 13 × 19 = 247

Therefore, the age of new student= 247-240= 7 years

2. Find the odd one among the following: 

A) 21

B) 51

C) 91

D) 31

Answer: D (Only Prime Number)

3. If Rs. 8000 is divided among three friends in the ratio 2:3:5, then what is the amount given to A?

A) 1500

B) 1600

C) 4000

D) 1800

Answer: B

4. The volume of a hemisphere of radius 42 cm is: 

A) 155232

B) 225322

C) 213232

D) 14462

Answer: A

5. Find the cost price if the seller had a loss of 25% when furniture was sold for Rs. 720. 

A) 960

B) 850

C) 900

D) 830

Answer: A

6. If 1st February 2024 is Saturday, what day will be March 1st, 2024?

A) Saturday

B) Friday

C) Sunday

D) Monday

Answer: A

7. Find the next number in the given series: DKM, FJP, HIS, JHV, _______

A) HJY

B) LGY

C) IGY

D) GHZ

Answer: B

8. 16 + 8 ÷ 2 × 6 – 10 = ?

A) 32

B) 30

C) 18

D) 52

Answer: B