Fire Operator Paper 2014 – Numerical Aptitude
If the cost price of 15 articles is equal to the selling price of 12 articles, find the percentage of gain.
(a) 15
(b) 20
(c) 25
(d) 30
The ratio between two numbers is 2:3. If each number is increased by 4, the ratio between them becomes 5 : 7. The difference between the numbers is
(a) 8
(b) 2
(c) 6
(d) 4
The geometric mean between 4 and 16 is
(a) 8
(b) 2
(c) 6
(d) 4
The sum of two numbers is 5 and their product is 6. The sum of their squares is
(a) 30
(b) 61
(c) 36
(d) 13
By what least number 60 be multiplied to obtain a number which is a perfect square?
(a) 6
(b) 10
(c) 12
(d) 15
If x:y = 4:5, then 5x+3y : 10x+ 2y=?
(a) 5 : 3
(b) 10 : 7
(c) 7 : 10
(d) 3 : 2
What will be the compound interest for Rs. 50,000 for two years at the rate per annum 10%?
(a) Rs. 10000
(b) Rs. 5000
(c) Rs. 10500
(d) Rs. 15000
The average age of 29 students of a class was 13 years. When a new boy was admitted, their average age became 13.1 years What was the age of the new boy?
(a) 14 years
(b) 16 years
(c) 15 years
(d) None of these
Median of 5, 7, 11, 17, 9, 15, 2, 23 and 19 is
(a) 9
(b) 17
(c) 15
(d) 11
The article is marked for Rs. 1300 and is sold for Rs. 1,144. Find the discount percent.
(a) 12%
(b) 13%
(c) 11%
(d) 14%
Two numbers are respectively 10% and 25% more than the third number. What percent is the first of the second?
(a) 80%
(b) 88%
(c) 85%
(d) 75%
The LCM of two numbers is 2079 and thier HCF is 27. If one of the number is 189. Find the other.
(a) 217
(b) 237
(c) 257
(d) 297
The smallest number which when divided by 42 and 54 leaves the remainders 34 and 46 respectively is
(a) 360
(b) 370
(c) 380
(d) 390
The area of a square field is 36100 sq.m. Find the cost of fencing it at the rate of rs. 200 per meter.
(a) Rs. 52000
(b) Rs. 76000
(c) Rs. 142000
(d) Rs. 152000
The length and breadth of a rectangular field are 100 m and 66 m respectively. The radius and length (height) of a cylinderical roller are 0.7 m and 1.5 m respectively. How many revolutions of this roller are necessary to level this field?
(a) 100
(b) 1000
(c) 500
(d) 200
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