81. Find the one which does not belong to that group ?

A. Regiment
B. Lieutenant
C. Colonel
D. Major

82. Find the one which does not belong to that group ?

A. Pakistani
B. Japanian
C. American
D. Brazilian
E. Russian

83. Find the one which does not belong to that group ?

A.Deal
B. Seal
C. Zeal
D. Meal
E. Real

84. Two ships are sailing in the sea on the two sides of a lighthouse. The angles of elevation of the top of the lighthouse as observed from the two ships are 30° and 45° respectively. If the lighthouse is 100 m high, the distance between the two ships is :_________?

A. 173 m
B. 200 m
C. 273 m
D. 300 m

85. The angle of elevation of a ladder leaning against a wall is 60° and the foot of the ladder is 4.6 m away from the wall. The length of the ladder is :_________?

A. 2.3 m
B. 4.6 m
C. 7.8 m
D. 9.2 m

86. Find out the wrong number in the series : 1, 1, 2, 6, 24, 96, 720.

A. 6
B. 24
C. 96
D. 720

87. Find the one which does not belong to that group ?

A. Pakistan : Rupee
B. America : Dollar
C. Kuwait : Dinar
D. Australia : Pound
E. Japan : Yen

88. The angle of elevation of the sun, when the length of the shadow of a tree is √3 times the height of the tree, is :________?

A. 90°
B. 45°
C. 60°
D. 30°

89. From a point P on a level ground, the angle of elevation of the top of a tower is 30°. If the tower is 100 m high, the distance of point P from the foot of the tower is :_________?

A. 149 m
B. 156 m
C. 173 m
D. 200 m

90. If the height of a pole is 2√3 meters and the length of its shadow is 2 meters, find the angle of elevation of the sun.

A. 50°
B. 60°
C. 70°
D. 80°