4
Q:

If two marbles are picked at random, what is the probability that either both are red or both are green?

A) 5/7 B) 5/14
C) 1/7 D) 1/14

Answer:   C) 1/7



Explanation:

Required probability = (10+3)91=1391=17

Q:

Solve the below equation.

       1+221+(1+31

A) 94 B) 65
C) 214 D) 215
 
Answer & Explanation Answer: C) 214

Explanation:
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0 29
Q:

Which of the following is an example of a metal that needs to be stored under oil?

A) Potassium B) Gold
C) Iron D) Silver
 
Answer & Explanation Answer: A) Potassium

Explanation:
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0 39
Q:

Pabitra had1927 l of petrol in the fuel tank of his vehicle at the start of a journey. During the journey,1312 l of petrol was consumed. What fraction of the initial petrol was left in the fuel tank after the journey?

 

A) 710 B) 35
C) 310 D) 1140
 
Answer & Explanation Answer: C) 310

Explanation:
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0 30
Q:

If A lies in third quadrant, and 20tanA=2120 tan A = 21, then the value of 5sinA-2cosA4cosA-57sinAfrac{5 sin A - 2 cos A}{4 cos A - frac{5}{7} sin A}

 

A) -6529\frac{-65}{29} B) 15\frac{1}{5}
C) 529\frac{5}{29} D) 1312\frac{13}{12}
 
Answer & Explanation Answer: B) 15\frac{1}{5}

Explanation:
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2 43
Q:

The sum of the squares of 3 natural numbers is 1029, and they are in the proportion 1 : 2 : 4. The difference between greatest number and smallest number is:

 

A) 15 B) 21
C) 31 D) 18
 
Answer & Explanation Answer: B) 21

Explanation:
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0 69
Q:

Two circles of radii 8 cm and 6 cm touch each other externally. The length of the direct common tangent is:

 

A) 13.86 B) 20
C) 10.12 D) 24
 
Answer & Explanation Answer: A) 13.86

Explanation:
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0 80
Q:

Which of the following physical quantities has no unit?

 

A) Momentum B) Density
C) Pressure D) Relative density
 
Answer & Explanation Answer: D) Relative density

Explanation:
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0 556
Q:

Satya Pal Malik was appointed as the governor of ....... by President Ram Nath Kovind.

 

A) Chhattisgarh B) Bihar
C) Odisha D) Jharkhand
 
Answer & Explanation Answer:

Explanation:
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0 449