2012 RRB Ahmedabad

Delusion, Mirage and Dilemma are a state of mind that is related to confusion. Identification is related to clarity of thought. So, identification is the odd one out. 

Moon is earth's satellite. All others are planets. 

In option (c), the two numbers are co-prime, ie don't have any common factors while the rest are not. 

Just like shoes are made of leather, a shirt can be made of cloth that can be of cotton or thread made . Option A) is the correct answer.

Just like bacteria brings disease, war brings destructions. Hence (d) is the right answer.

(l - 5)(b+3) = lb - 9 .... (1)

(l+ 3)(b+2) = lb + 67 ...... (2)

(1) => lb - 5b + 3l -15 = lb - 9

or 3l - 5b = 6

(2) = > lb + 3b + 2l + 6 = lb + 67

or 2l + 3b = 61

from these equations, l = 17 m

Number of people who like fish = 50

Number of people who like chicken = 60

Let the number of people who like both fish and chicken = x

Number of people who do not like fish = 50

Number of people who do not like chicken = 100 - 60 = 40

Number of people who do not like either fish or chicken = 10

So, number of people who do not like either fish or chicken or both = 40 + 50 - 10 = 80

Number of people who like at least one of the two dishes = 50 + 60 - x = 100 - Number of people who do not like both the dishes = 100 - 10 = 90

=> x = 20

So, 20 people like both the dishes

Let there be x successful candidates in the exam.

Unsuccessful candidates = 120 - x

Total score = 35 x 120

Total score is also equal to x * 39 + (120 - x) * 15

So, x = (35 * 120 - 120 * 15)/ 24 = 120 * 20 / 24 = 100

Since by sending 10 candidates from P into Q, they become equal, the difference between P and Q is 20. Let P have x and Q have "x-20" candidates. But 2*( "x-20" -20) = x+20

So, x = 100 candidates.

Let the number be xy. So 10 x +y = k (x + y)

11 - k = 11- $$ \frac{10x+y}{x+y}$$ = $$\frac{11x + 11y - 10x - y}{x+y}$$

= $$ \frac {10y + x}{x+y}$$ which is inverse of the number divided by the sum of the digits.

Hence the required factor is 11 - k