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 4231

Q:

The Gas used for Artificial Ripening of Green Fruit is

A) Acetone	B) Di Carbonate
C) Ethylene	D) Ethyl Alcohol

Answer & Explanation Answer: C) Ethylene

Explanation:

Ethylene is used for Artificial Ripening of Green Fruit.

Calcium carbide is also used in some countries for artificially ripening fruit. When calcium carbide comes in contact with moisture, it produces acetylene gas, which is quite similar in its effects to the natural ripening agent, ethylene

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Filed Under: Chemistry
Exam Prep: AIEEE
Job Role: Bank PO

9 4231

Q:

The function of an assembler is ________

A) To convert basic language into machine language	B) To convert high level language into machine language
C) To convert assemble language into machine language	D) To convert assemble language into high level language

Answer & Explanation Answer: C) To convert assemble language into machine language

Explanation:

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Filed Under: Computer
Exam Prep: Bank Exams

2 4231

Q:

With which Bank Google has tied up for its mobile payments app Tez?

A) SBI Bank	B) Axis Bank
C) HDFC Bank	D) PNB Bank

Answer & Explanation Answer: A) SBI Bank

Explanation:

Internet giant Google has tied up with State Bank of India (SBI) for its mobile payments app Tez. Through this partnership, Google Tez will allow users to create an SBI UPI Id - @oksbi and get access.

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

4 4230

Q:

Which Stack is used in 8086?

Answer

FIFO (First In First Out) stack is used in 8086. In this type of Stack the First Stored Information is retrieved first.

Workspace

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Subject: Hardware

0 4230

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 4229

Q:

A capillary tube is partially dipped vertically in a vessel containing water. Due to capillarity water rises in the tube. The height of water rise in the tube can be increased by

A) decreasing the radius of the capillary tube	B) increasing the radius of the capillary tube
C) increasing the height of water in the vessel	D) None of these

Answer & Explanation Answer: A) decreasing the radius of the capillary tube

Explanation:

The water rise in a capillary tube dipped in water is such that the weight of water in the tube above the surface of water in the vessel is equal to (balances) the upward force due to surface tension. So it is clear that if the the bore (radius) to the tube is decreased, the height of the water column in it must be greater. So, (a) is correct.

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Filed Under: Physics

4 4228

Q:

Who is the inventor of printing press?

A) Johann Gutenberg	B) William Lee
C) George Eastman	D) R.W Thomson

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