86. Which of the following is correct?
(A) a triangle has 3 vertices (B) a triangle has 3 sides (C) a triangle has 3 angles (D) All of these
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87. In the figure what type of angles <1 are <2 and?
(A) right angle and acute angle (B) acute angle and obtuse angle (C) right angle and obtuse angle (D) obtuse angle and acute angle
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88. Pick the odd one out?
(A) 3/10 (B) 6/15 (C) 9/30 (D) 12/40
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89. How many composite numbers are there which are less than 20?
(A) 8 (B) 9 (C) 10 (D) 11
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90. What is the greatest prime factor of 20?
(A) 2 (B) 4 (C) 20 (D) 5
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