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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Filed Under: Quantitative Aptitude - Arithmetic Ability
Exam Prep: Bank Exams , GATE

4 3300

Q:

Using OQL, you may do which of the following?

A) Return an entire collection of elements including duplicates.	B) Return a collection of elements without duplicates.
C) Return a specific subset of elements using a given criteria.	D) All of the above.

Answer & Explanation Answer: D) All of the above.

Explanation:

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Filed Under: Database

0 3300

Q:

Which country has replaced China as the top retail destination in 2017 Global retail development index ?

A) Russia	B) India
C) Japan	D) USA

Answer & Explanation Answer: B) India

Explanation:

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Filed Under: Indian Economy
Exam Prep: Bank Exams , CAT
Job Role: Bank Clerk , Bank PO

8 3299

Q:

By which Amendment Act of the Constitution of India were the Directive Principles of the State Policy given precedence over the Fundamental Right whereever they come into conflict?

A) 40th	B) 42nd
C) 44th	D) 46th

Answer & Explanation Answer: B) 42nd

Explanation:

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Filed Under: Indian Politics

7 3299

Q:

That which cannot be heard

A) Audible	B) Edible
C) Disedible	D) Inaudible

Answer & Explanation Answer: D) Inaudible

Explanation:

One word substitute for "That which cannot be heard" is Inaudible.

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Filed Under: English
Exam Prep: AIEEE , Bank Exams , CAT
Job Role: Analyst , Bank Clerk , Bank PO

3 3298

Q:

' Crime and Punishment ' was written by

A) Alexander Solzhenitysn	B) Lewis Carroll
C) Fyodor Dostoevsky	D) Valdimir Nabakov

Answer & Explanation Answer: C) Fyodor Dostoevsky

Explanation:

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Filed Under: Books and Authors

2 3298

Q:

Which sea separates Europe from Africa?

A) The Gulf of Mexico	B) The caribbean sea
C) The Mediterranean sea	D) Both B & C

Answer & Explanation Answer: C) The Mediterranean sea

Explanation:

The Mediterranean sea separates Europe from Africa.

which_sea_separates_europe_from_africa1542971516.jpg image

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Filed Under: World Geography
Exam Prep: AIEEE , Bank Exams , CAT
Job Role: Analyst , Bank Clerk , Bank PO

1 3297

Q:

A person with blood group AB

A) Can donate blood to persons with blood group A, B and O	B) Is called universal blood donor
C) Can receive blood from any group	D) Is neither a universal recipient nor a donor

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