121. The mean of 10 observations is 16. On checking it was found that 2 observations were wrongly copied as 4 and 6 in place of 8 and 7. The correct mean is –

(A) 17

(B) 16.5

(C) 16

(D) 15.5

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122. The angle of depression of two ships from the top of light house situated at 60 m height from sea level, are 30° and 45° If two ships are on the same side of the light house, then the distance between two ships is

(A) 60(√3 + 1) m

(B) 60(√3-1) m

(C) 60 √3 m

(D) (60 + √3) m

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123. If the following bar graph represent the number of students enrollad in different faculties in a college, then what is total number of students enrolled in the college ?

(A) 500

(B) 1800

(C) 1250

(D) 1000

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124. A pole of 24 m height which cast the shadow of length 8√5 m. The angle of elevation of the sun is –

(A) 90°

(B) 60°

(C) 45°

(D) 30°

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125. If p= sine θ + cos θ and q= sec θ + cosec θ, then q(p^{2}-1) is –

(A) 4p

(B) 3p

(C) 2P

(D) p

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126.The angle in radians between the hands of a clock at 7:20 P.M. is –

(A) 5π/9 radians

(B) 7π/9 radians

(C) 7π/5 radians

(D) 5π/7 radians

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127. In a Δ ABC, D is the mid-point of side AC and BD=1/2AC, then ∠ABC is.

(A) 120°

(B) 90° .

(C) 60°

(D) 45°

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128. In the given figure ABCD is a cyclic quadrilateral, if ∠AOC = 130° then ∠ABC is –

(A) 60°

(B) 50°

(C) 65°

(D) 115°

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129. The score of a batsman in 10 innings are : 38, 70, 48, 34, 42, 55, 63, 46, 54, 44. What is the mean deviation about the median’?

(A) 64

(B) 58.4

(C) 8.6

(D) 86

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130. Following is the distribution of earnings of 200 workers in a flour mill:

monthly wages (in Rupees) | 80-100 | 100-120 | 120-140 | 140-160 | 160-180 |

No. of workers | 20 | 30 | 20 | 40 | 90 |

The average earnings of the workers is –

(A) ₹ 160

(B) ₹ 155

(C) ₹ 150

(D) ₹ 145

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131. In figure, if ∠ ABC=65° and ∠ ACB =35° then ∠ BDC is-

(A) 55°

(B) 25°

(C) 80°

(D) 100°

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132. The angle between the bisectors of two adjacent supplementary angles is –

(A) Straight angle

(B) Right angle

(C) Obtuse angle

(D) Acute angle

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133. The area of the base of a right circular cone is 28.26 m^{2} and its height is 4 m then its curved surface area is – (Use π = 3,14)

(A) 47.14m^{2}

(B) 47.10m^{2}

(C) 45.10m^{2}

(D) 40mm^{2}

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134. How many liters of water can be filled in a cuboidal water tank 2 m long, 5m wide and 1.5 m deep ?

(A) 15 liters

(B) 15000 liters

(C) 1500 liters

(D) 150 liters

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135. Which single discount is equivalent to two successive discount of 10% and 30% ?

(A) 38%

(B) 37%

(C) 35%

(D) 40%

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136. Simple interest on ₹ 24,000 at 81/2% annum for 8 months is

(A) ₹ 1360

(B) ₹ 1480

(C) ₹ 1620

(D) ₹ 1560

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137. Suresh and Mahesh started a business by investing ₹ 1,15,000 and ₹ 1,85,000 respectively. Out of a total profit of ₹ 18,000 Mahesh’s share is –

(A) ₹ 11,500

(B) ₹ 11,100

(C) ₹ 9,000

(D) ₹ 6,900

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138. If in two ΔABC and ΔPQR, AB/QR = BC/PR = CA/PQ, then which of the following is true ?

(A) ΔBCA ~ ΔPQR

(B) ΔCBA ~ ΔPOR

(C) ΔPQR ~ ΔABC

(D) ΔPQR ~ ΔCAB

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139. One side of a rectangular field is 5 m and its diagonal is 13 m, then the area of the field is –

(A) 32.5 m^{2}

(B) 18 m

^{2}

(C) 60 m

^{2}

(D) 65 m

^{2}

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140. Distance between the points (3, 6) and (0, 0).is –

(A) 3√5 units

(B) √35 units

(C) 5 units

(D) √46 units

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