51. Arjun is twice as old as Shriya. Five years ago his age was three times Shriya’s age. Find their present ages.

**10 years, 20 years**.- 5 years, 10 years
- 15 years, 30 years
- 12 years, 24 years

52. The diagonals of a rhombus are 7.5 cm and 12 cm. Find its area?

**45 cm**^{2}- 90 cm
^{2} - 35 cm
^{2} - 80 cm
^{2}

53. The surface area of a sphere of radius 14 cm is :

**2464 cm**^{2}- 2468 cm
^{2} - 2064 cm
^{2} - 2664 cm
^{2}

54. A right circular cone whose slant height is 10 cm and base radius is 7 cm. The curved surface area will be :

- 240 cm
^{2} **200 cm**^{2}- 220 cm
^{2} - 210 cm
^{2}

55. The factors of X^{2}+10X+21 are

- (X+2) (X+5)
- (X-3) (X+5)
- (X+2) (X-5)
**(X+3) (X+7)**

56. The cube root of number 8000 is …….

- 80
- 40
**20**- 8

57. Cos (90°-A) =?

- Cos A
- –Cos A
- Cosec A
**Sin A**

58. A square whose side is 12 cm. Then its perimeter will be

- 144 cm
- 24 cm
**48 cm**- 50 cm

59. A man got 10% increase in his salary. If his new salary is Rs. 1,54,000. Then his original salary is

- 1,50,000
- 1,60,000
**1,40,000**- 1,45,000

60. How many multiples of 4 lies between 10 and 250?

- 40
- 50
**60**- 70

61. Meeta saves Rs 400 from her salary. If this is 10% of her salary. What is her salary?

**4000**- 5000
- 400
- 6000

62. The surface area of Cube is ……..

- A
^{3} **6a**^{2}- A
^{2} - 2a
^{2}

63. If 60 % of (x-y) = 40% of (x+y). Then what percent of x is y?

**20%**- 25%
- 22%
- None of these

64. Find the missing number in the series 2,5,11,22,32,47, ……….. 86

- 60
**65**- 58
- 62

65. If x+y = 18 and xy = 72 . What is the value of (x^{2})+(y^{2})

- 120
- 90
**180**- None of these

66. What is the additive inverse of -3/7

- 7/3
**3/7**- -7/3
- None of these

67. 81 : 27 :: 93 : ?

- 39
- 63
**31**- 13

68. For what value of K, the number 7236K2 is divisible by 8?

**7**- 5
- 4
- 9

69. Find a Pythagoras Triplet whose one number is 12?

- (12,15,17)
**(12,,35,37)**- (12,13,14)
- (5,12,14)

70. Find the smallest square number which is exactly divisible by 4, 9 and 10

**900**- 400
- 490
- 360

71. What would be the proper ascending order of the following

1. Decametre

2. Meter

3. Kilometer

4. Centimeter

5. Millimeter

- (54123)
- (54321)
**(54213)**- (23154)

72. Largest four number digit is

- 9989
- 9000
- 9888
**9999**

73. Find the smallest number by which 216 should be divided to make the result a perfect square.

- 4
- 3
**6**- 2

74. Which will be the smallest number of 7 digits using 0,1,2,3,4,5, and 6?

- 1204536
**1023456**- 1042356
- 1654320

75. The age of Raju’s father is 5 times more then the three times the age of Raju what is the age of Raju. If his father’s age is 44 years.

- 14 yr
- 46 yr
- 40 yr
**13 yr**