Questions

Q:

Two boxes contain 4 and 16 balls respectively. Two balls in the first box and four in the second, are black. If a box is chosen randomly and two balls are drawn at random from it, what is the
probability that at least one ball is black if the ball is not replaced?

A) 11/20 B) 43/120
C) 77/120 D) 9/20
 
Answer & Explanation Answer: C) 77/120

Explanation:

At least one black can be chosen in two ways from each box:
Now, probability of choosing at least one black ball from first box 

= 1/2 × [ (2C1× 2C1)/4C2 + 2C2/ 4C2 ]= 5/12

Probability of choosing at least one black ball from 2nd box
= 1/2 × [(4C1×12C1)/16C2 + 4C2/ 16C2] = 9/40

Final probability

= 5/12 + 9/40 = (50 + 27)/120 = 77/120

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Q:

In Cricket the two sets of wickets are

A) 22 yards apart B) 24 yards apart
C) 20 yards apart D) 21 yards apart
 
Answer & Explanation Answer: A) 22 yards apart

Explanation:

According to the rules and regulations of cricket, the height of the stumps must be of 28 inches or 71.12 cms. The total distance between the off stump and leg stump should be 9 inches or 22.86 cms. 1. Width and pitching. Two sets of wickets shall be pitched opposite and parallel to each other at a distance of 22 yards/20.12 meters.

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Filed Under: General Awareness
Exam Prep: AIEEE , Bank Exams
Job Role: Analyst , Bank Clerk , Bank PO

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Q:

Kaziranga Wild Life Sanctuary is in the state of :

A) Assam B) Tamil Nadu
C) Bihar D) Kerala
 
Answer & Explanation Answer: A) Assam

Explanation:
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Filed Under: Indian Geography

80 4218
Q:

Recycled plant matter is known as ?

A) Decomposed B) Carbide
C) Compost D) None
 
Answer & Explanation Answer: C) Compost

Explanation:
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Filed Under: Chemistry

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Q:

Which country has signed an agreement with India for transfer of sentenced prisoners ?

A) Japan B) Ghana
C) Somalia D) Italy
 
Answer & Explanation Answer: C) Somalia

Explanation:

Signing the Agreement with Somalia shall facilitate the Indian prisoners imprisoned in Somalia or vice-versa to be near to their families, for serving remaining part of their sentence and shall facilitate their social rehabilitation.

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Filed Under: Indian Politics
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Q:

Which country is known as land of kangaroo ?

A) France B) Italy
C) Australia D) Africa
 
Answer & Explanation Answer: C) Australia

Explanation:
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Filed Under: Famous Places
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Q:

India's first National Defence University is being established in

A) Gurgaon B) Hissar
C) Panipat D) Ambala
 
Answer & Explanation Answer: A) Gurgaon

Explanation:
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2 4216
Q:

Indus Valley Civilization is called the protohistoric civilization because its people knew 

A) art B) writing
C) copper D) pottery
 
Answer & Explanation Answer: B) writing

Explanation:
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Filed Under: General Awareness

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