HSSC MANDI SUPERVISOR EXAM, 2016 (Morning shift)

Total Questions: 100

81. Find out the least number which when multiplied by 45 the result becomes a perfect square?

Correct Answer: (3) 5
Solution:Let number is 5

45 * 5 = 225 is a square of 15

82. Consider that O is the center of the circular and ∠APB = 50°, then ∠OAB = ?

Correct Answer: (2) 40°
Solution:

83. (175)²- (75)² = ?

Correct Answer: (4) Non of the above
Solution:(175)² - (75)²

= (175 + 75)(175 - 75)

Because

a² - b² = (a + b)(a - b)

= 250 * 100 = 25000

84. Solve it ?

Correct Answer: (1) 15/13
Solution:

85. 1/2+ 1/2*1/2-1/2=?

Correct Answer: (4) 1\4
Solution:

86. 1 hectare = ?

Correct Answer: (2) 10000 m²
Solution:1 hectare = 10000cm2

87. The side of the square given below is 10 m and breadth of the shaded portion is 2 cm. Find out the area of the shaded portion.

Correct Answer: (2) 36 m²
Solution:Breadth of shaded = 2 m

length = 10 m

Area of shaded region = 2[2 * 10] - 2 * 2

= 40m ^ 2 - 4m ^ 2 = 36m ^ 2

88. The sum of two numbers is 24 and the sum of their squares is 386, then one number is?

Correct Answer: (2) 19
Solution:

89. If (1) 10x² - 7x+1=0 and (II) 35y² -12y + 1 = 0 then

Correct Answer: (4) x≤y
Solution:

90. A wheel rotates 15 times each minute. How many degress will it rotate in 12 seconds of time?

Correct Answer: (4) None of the above
Solution: