Rationale: Area of an equilateral triangle = √3/4 S2
If S = 4, Area of triangle = √3/4 * 4 * 4 = 4√3 cm2;
The answer: (B)
Question: What is the are of an equilateral triangle of side 4 cm?
Options:
(A) 64√5
(B) 4√3
(C) 64√4
(D) 64√3
(E) 64√2

Reasoning: (600*3*4)/100 = 72
600 + 72 = 672
Ans: (A)
Question: Rs.600 amounts to Rs.900 in 3 years at simple interest. If the interest is increased by 4%, it would amount to how much?
Options:
(A) 672
(B) 246
(C) 258
(D) 856
(E) 653

Rationale: D = 25 * 60 + 1100 = 2600 m
T = 2600/60 * 18/5 = 156 se
The answer: (C)
Question: A train of 24 carriages, each of 60 meters length, when an engine also of 60 meters length is running at a speed of 60 kmph. In what time will the train cross a bridge 1.1 km long?
Options:
(A) 2 mins 14 sec
(B) 2 mins 34 sec
(C) 156 sec
(D) 134 sec
(E) 2 mins 44 sec

Reasoning: Speed = 60 * 5/18 = 50/3 m/sec
Length of the train = speed * time = 50/3 * 15 = 250 m
Ans: (D)
Question: A train running at the speed of 60 km/hr crosses a pole in 15 sec. What is the length of the train?
Options:
(A) 118
(B) 150
(C) 277
(D) 250
(E) 191

Rationale: 13 is the only prime number or odd number in the series.
The answer: (A)
Question: Find the wrong number below mentioned series
13,60,100,500,850
Options:
(A) 13
(B) 60
(C) 100
(D) 500
(E) 850

Rationale: (50/100) * 56 – (30/100) * 50
28 - 15 = 13
The answer: (C)

Question: How much 50% of 56 is greater than 30% of 50?
Options:
(A) 18
(B) 99
(C) 13
(D) 55
(E) 71