Numerical Ability Oriental Insurance AO Exam

Numerical Ability Oriental Insurance AO Exam

Oriental Insurance Model Test Paper

1. If r is the remainder when each of 7654, 8506 and 9997 is divided by the greatest number d (d > 1), then d – r is equal to

(1) 14

(2) 18

(3) 24

(4) 28

Ans. (1)

2. When 15 is included in a list of natural numbers, their mean is increased by 2. When 1 is included in the new list, the mean is decreased by 1. How many numbers were there in the original list?

(1) 4

(2) 5

(3) 6

(4) 8

Ans. (1)

3. A watch is sold at a profit of 2l % .If both the cost price and the selling price of the watch are decreased by Rs. 100; the profit would be 5% more. Original cost price of the watch is

(1) Rs. 450

(2) Rs. 500

(3) Rs. 550

(4) Rs. 600

Ans. (2)

4. Ravi can walk a certain distance in 40 days when he rests 9 hours a day. How long will he twice to walk twice the distance, twice as fast and rest twice as long each day?

(1) 40 days

(2) 80 days

(3) 50 days

(4) 100 days

Ans. (4)

5. A solid is in the form of a circular cylinder with hemispherical ends. The total length of solid is 35 cm. The diameter the cylinder is 1/4 of its height. The surface area of the solid is (Take Π= 22/7)

(1) 462 cm²

(2) 693 cm²

(3) 750 cm²

(4) 770 cm²

Ans. (4)

6. A sum of money lent out at compound interest increases value by 50% in 5 years. A person wants to lend three different sums x, y and z for l5 and 20 years respectively at the above rate in such a way that he gets back equal sums at the end of their respective periods. The ratio x: y: z is

(1) 6: 9: 4

(2) 9: 4: 6

(3) 9: 6: 4

(4) 6: 4: 9

Ans. (3)

7. Which school has the highest number of students scoring exactly 50% of marks?

(1) A

(2) B

(3) D

(4) E

Ans. (3)

8. What is the ratio of total number of students scoring marks less than 50% to that of scoring marks exactly 50%?

(1) 2: 25

(2) 25:4

(3) 25:2

(4) 50:3

Ans. (1)

9. For numbers a and b, define * as a a*.b= (a+b) ÷ (a-b).Then the value of (l*2)*3 is

(1) -2/3

(2) -1/5

(3) 0

(4) ½

Ans. (3)

10. The six-digit number 5 A B B 7 A is a multiple of 33 for digits A and B. Which of the following could be possible value of A + B?

(1) 8

(2) 9

(3) 10

(4) 14

Ans. (2)

11. The product of two 2-digit numbers is 2028 and their HCF is 13. The sum of the numbers is:

(1) 65

(2) 78

(3) 91

(4) 169

Ans. (3)

12. Cost of a diamond varies directly as the square of its weight. A diamond broke into four pieces with their weights in the ratio 1: 2: 3: 4. If the loss in the total value of the diamond was Rs. 70,000, the price of the original diamond was

(1) Rs. 1, 00,000

(2) Rs. 1, 40,000

(3) Rs. 1, 50,000

(4) Rs. 1, 75,000

Ans. (1)

13. A is twice as good a workman as B and so takes 60 days less than B for doing s job. The time in which they can do the job to her brother is

(1) 30 days

(2) 60 days

(3) 22 (1/2) days

(4) 45 days

Ans. (3)

14. A shopkeeper marks his goods at such a price that after allowing a discount of 12.5 % on the marked price, he still earns a profit of 10%. The marked price of an article which costs him Rs. 4900 is

(1) Rs. 5, 390

(2) Rs. 6, 160

(3) Rs. 5,490

(4) Rs. 6,620

Ans. (2)

15. An equilateral triangle and a regular hexagon have equal perimeters. If the area of the triangle is 2 cm², then the area of the hexagon is.

(1) 2 cm²

(2) 3 cm²

(3) 4cm²

(4) 6 cm²

Ans. (2)

16. A solid metallic sphere of radius is converted into a solid right circular cylinder of radius R. If the height of the cylinder is twice the radius of the sphere, then

(1) R= r

(2) R= r√2/3

(3) R= √2r/3

(4) R= 2r/3

Ans. (2)

17. Which school has the lowest percentage students scaring marks less than 50%?

(1) A

(2) B

(3) E

(4) D

Ans. (1)

18. What is the total number of students scoring marks 50% or more?

(1) 675

(2) 775

(3) 875

(4) 1250

Ans. (2)

19. From among 2^1/2, 3^1/3, 8^1/8, 9^1/9 which one is the greatest?

(1) 2^1/2

(2) 3^1/3

(3) 8^1/8

(4) 9^1/9

Ans. (2)

20. The number 25⁶⁴ x 64²⁵ is the square of a natural number n. The sum of digits of n is

(1) 7

(2) 14

(3) 21

(4) 28

Ans. (2)

21. Let x be the product of two numbers 3, 659, 893, 456, 189, 325, 678 and 342, 973, 489, 379, 256. The number of digits in x is

(1) 32

(2) 34

(3) 35

(4) 36

Ans. (2)

22. If S=1²-2²+3²-4²+ ……+199² – 200², then the value of S is

(1) 19900

(2) 20100

(3) -20100

(4) – 19900

Ans. (3)

23. is equal to

(1) 1- √3

(2) √3-1

(3) 2(2-√3)

(4) 2(2+√3)

Ans. (2)

24. Two candles having the same lengths are such that one burns out completely in 3 hours at a uniform rate and the other in 4 hours. At what time (P.M.) should both the candles be lighted together so that at 4 P.M., the length of one is twice the length of the other?

(1) 1: 24

(2) 1: 30

(3) 1:36

(4) 1:42

Ans. (3)

25. A sum of Rs. 36.90 is made of 180 her 10 paise coins or 25 paise coins. The number of 10 paise coins is:

(1) 54

(2) 60

(3) 80

(4) 120

Ans. (1)