What is the are of an equilateral triangle of side 2 cm?
Options:
(A) 3
(B) 649
(C) 644
(D) 643
(E) 642
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Area of an equilateral triangle = 3/4 S2
If S = 2, Area of triangle = 3/4 * 2 * 2 = 3 cm2; So the answer is: (A).
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Fill in the blank with the correct number in this number series: 5, 15, 7, 12, __, 9, 11,... ?
Options:
(A) 6
(B) 9
(C) 8
(D) 7
(E) 5
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In this simple alternating subtraction and addition series; The first series begins with 5 and adds 2; the second begins with 15 and subtracts 3, and so on. So the answer is: (B).
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The area of a triangle is with base 10m and height 5m?
Options:
(A) 11
(B) 25
(C) 787
(D) 122
(E) 12
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1/2 * 10 * 5 = 25 m2 So the answer is: (B).
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