RRB Mini Mock #4

Seeing the above sequence diagram it is clear that the missing letter is O.

Engineering students who cleared PCS = 24% of 1200 = 288

Medical students who cleared PCS = 21% of 1200 = 252

Required difference = 288 – 252 = 36

Engineering students who cleared PCS = 24% of 1200 = 288

Initial selection percentage of Engineers = (288/11480) × 100 = 2.51%

Engineering students who join PCS = 288 – (288/4) = 216

New selection percentage of Engineers = (216/11480) × 100 = 1.88%

Percentage change = 2.51 – 1.88 = 0.63%

1) Book is tough → fu la mi

2) Tough can easy → fu mu po

Hence, the code for Tough is “fu”.

Matter is the Stuff Around You. Matter is everything around you. Atoms and molecules are all composed of matter.

Atoms can join together to form molecules, which in turn form most of the objects around you. Atoms are composed of particles called protons, electrons and neutrons.

Electron → Atom → Molecule → Matter.

Hence, order is  4 → 1 → 3 → 2 (4, 1, 3, 2) is correct option

Total candidates who applied = 56,790

Total candidates who qualified = 1,200

Percentage of candidates selected = (1200/56790) × 100 = 2.12%

The average of two numbers = 62

∴ Total sum of the numbers = 62 × 2 = 124

Let one number is ‘x’ which is the smaller number, then the other number becomes ‘124 – x’. Now after 2 is added the ratio becomes 1 : 2

⇒[x+2]/[124−x]=1/2

⇒ 2x + 4 = 124 – x

⇒ 2x + x = 124 – 4

⇒ 3x = 120

⇒ x = 40

1. Carolina Marin Martin is a profession badminton player from Spain who is the Olympic Champion.
2. She is currently ranked 5 in the Badminton World Federation ranking. She is three-time world champion and four times European Champion.

a : b = 2 : 3

⇒ a/b = 2/3

⇒ b = 3a/2

b : c = 4 : 5

⇒ b/c = 4/5

Using BODMAS , simplifying 60% of 40% of 150% of 52

⇒ 60% of 40% of 150% of 52

⇒ 60/100 of 40/100 of 150/100 of 52

⇒ 60/100 × 40/100 × 150/100 × 52

⇒ (60 × 40 × 150 × 52)/(100 × 100 × 100)

⇒ 18720000/1000000

= 18.72

Selection percentage of Arts = (32% of 1200/15500) × 100 = 2.48%

Selection percentage of Science students = (15% of 1200/10520) × 100 = 1.71%

Selection percentage of Engineers = (24% of 1200/11480) × 100 = 2.51%

Selection percentage of Medical department = (21% of 1200/11540) × 100 = 2.18%

Selection percentage of Commerce = (8% of 1200/7750) × 100 = 1.24%

Selection percentage is maximum for engineers

National Panchayati Raj Day is observed in India on April 24 every year. This date marks a defining moment in the history of decentralization of political power to the grassroots level. Then Prime Minister of India Manmohan Singh inaugurated first National Panchayati Raj Day in 2010.

x/y = 5 ⇒ x = 5y

∴ 4x² – 22xy + 10y² put x = 5y in this equation

⇒ 100y² – 110y² + 10y² = 0

Cube of 9 is 729 and 729 is called 2187[729X3].

Hence, the answer is 2187.

1. All India Postage Stamp issued on 1^st October 1854.
2. The stamp was known as ‘Half Anna Stamp’ which showed a youthful profile of Queen Victoria.
3. That was the first stamp in Asia, issued by British India, which was decided to be printed in India in the interest of economy.
4. After independence, India's first postal stamp was issued on 21 November 1947.

1. Ideal gas law is developed by the combination of the combined gas law and Avogadro's law.
2. It is represented by,

PV= nRT, where, P is the pressure of the gas, V is its volume, T is its absolute temperature, R is the universal gas constant and n is the number of moles.

1. It gives the idea regarding the behaviour of most of the gases under most of the possible conditions.
2. Real gas law is associated with the real gases and they follow the Van Der Waal's Equation.
3. Henry's law states that the amount of dissolved gas is proportional to its partial pressure in the gas phase.
4. Graham's Law states that the rate of diffusion of a gas is inversely proportional to the square root of the mass of its particles.

Given, ratio of father’s age to his son’s age is 8 : 5.

Let their ages be 8x and 5x respectively.

Given, product of their age is 1440.

∴ 8x × 5x = 1440

⇒ x² = 36

⇒ x = 6

Father’s present age = 8 × 6 = 48

Son’s present age = 5 × 6 = 30

Ratio of their ages after 6 years = (48 + 6)/(30 + 6) = 54/36 = 3 : 2

The lung is the organ through which man breathes. Similarly, an earthworm breathes through its skin. (Fish=gills, tiger, birds=lungs).
Therefore, the required pair is Lung: Man ∷ Skin : Earthworm

H + 3 = K

C + 3 = F

J + 3 = M

but A + 3 ≠ T

Hence AT is the odd one out.

1. Jaspal Rana is an Indian shooter.
2. He is from Dehradun, Uttarakhand.
3. He won his first gold medal at the 1994 Asian Games.
4. He owns an institute named 'Jaspal Rana Institute of Education and Technology' in Dehradun and is a coach in it.

The percentage is 75%

= 75/100

= 15/20  [when divided by 5 both]

= 3/4

From the given data,

⇒ 1.123 + 11.23 + 112.3 = 124.653

∴ ? = 124.653

10 A 4 C 2 B 1 D 8 = ?

⇒ 10 × 4 ÷ 2 - 1 + 8

⇒ 10 × 2 - 1 + 8

⇒ 20 + 7 = 27

Thus, 27 is the correct answer.

We know that, sum of n numbers = mean of n numbers × n

Given that, the mean of 100 items was found to be 30.

The sum of 100 numbers = mean of 100 numbers × 100

⇒The sum of 100 numbers = 30 × 100 = 3000

Now, at the time of calculation, two items were wrongly taken as 32 and 12 instead of 23 and 11.

∴ The actual sum = 3000 – 32 + 23 -12 + 11 = 2990

The correct mean = the correct sum ÷ 100

⇒ The correct mean = 2990 ÷ 100 = 29.9

The percentage of gold in the ornament = [3/(3 + 2)] × 100 = (3/5) × 100 = 60%

∴ The percentage of gold in the ornament = 60%

The reproductive unit of angiosperms is their flower. A flower is made up of sepals, petals, stamens and carpels. The male sex organ of a flower is the stamen and the female sex organ is the pistil, which is made up of one or more carpels.

The pattern followed here is:

P + U + L + S + E = 16 + 21 + 12 + 19 + 5 = 73, 73 + 5 = 78

Let’s check each option:

Human will be coded as 64 → False (sum of all positional value + 5 is 62)

 Agent will be coded as 52 → True (as A + G + E + N + T  + 5 = 52)

Life will be coded as 36 → False (sum of all positional value + 5 is 37)

Arun will be coded as 58 → False (sum of all positional value + 5 is 59)

A monoecious plant is a plant where both the male and female reproductive systems exist on the same plant. Monoecious plants possess some flowers that are female and others that are male.

FEB, DIC, and JOT consists of only one vowel but OUT consists of two vowels, hence it is the odd one out.

The pattern is as follows,

Thus the odd one is CDHM.

A cat has paws, whereas a human has hands for similar purposes.

Therefore, the most appropriate pairing would be

CAT : PAWS ∷ HUMAN : HANDS

DARE → interchange first 2 letters and then next 2 letters → ADER.

Similarly,

REEK → ERKE

Hence answer is ERKE.

Let the missing value be ‘x’. According to question:

⇒ 40% of x = 960

⇒ 40/100 × x = 960

⇒ x = 960 × 100/40

⇒ x = 96 × 25 = 2400