IT Trainer Questions


Q:

In a box, there are 9 blue, 6 white and some black stones. A stone is randomly selected and the probability that the stone is black is ¼. Find the total number of stones in the box? 

A) 15 B) 18
C) 20 D) 24
 
Answer & Explanation Answer: C) 20

Explanation:

We know that, Total probability = 1

Given probability of black stones = 1/4

=> Probability of blue and white stones = 1 - 1/4 = 3/4

But, given blue + white stones =  9 + 6 = 15

Hence,

3/4 ----- 15

 1   -----  ?

=> 15 x 4/3 = 20.

 

Hence, total number of stones in the box = 20.

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Filed Under: Probability
Exam Prep: AIEEE , Bank Exams , CAT , GATE
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16 5256
Q:

Appellate jurisdiction refers to

Answer

Appellate jurisdiction refers to the power of a higher court to review decisions and change outcomes of decisions of lower courts.

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Subject: Indian Politics Exam Prep: AIEEE , Bank Exams , CAT
Job Role: Analyst , Bank Clerk , Bank PO , IT Trainer

2 5254
Q:

Which of the following is not an aerosol?

A) mud B) dust
C) smoke D) fog
 
Answer & Explanation Answer: A) mud

Explanation:

Among the given options, mud is not an aerosol.

 

An aerosol is a suspension of fine solid particles or liquid droplets, in the air or another gas. Aerosols can be natural or anthropogenic. Examples of natural aerosols are fog, dust, forest exudates and geyser steam. Examples of anthropogenic aerosols are haze, particulate air pollutants, and smoke.

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Filed Under: Physics
Exam Prep: AIEEE , Bank Exams , CAT , GATE
Job Role: Analyst , Bank Clerk , Bank PO , IT Trainer

5 5250
Q:

Tilak rides on a cycle to a place at speed of 22 kmph and comes back at a speed of 20 kmph. If the time taken by him in the second case is 36 min. more than that of the first case, what is the total distance travelled by him (in km)?

A) 132 km B) 264 km
C) 134 km D) 236 km
 
Answer & Explanation Answer: B) 264 km

Explanation:

Let the distance travelled by Tilak in first case or second case = d kms

Now, from the given data,

d/20 = d/22 + 36 min

=> d/20 = d/22 + 3/5 hrs

=> d = 132 km.

 

Hence, the total distance travelled by him = d + d = 132 + 132 = 264 kms.

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5 5241
Q:

What is the maximum number of Triggers can be applied in a table ?

A) 8 B) 9
C) 12 D) 14
 
Answer & Explanation Answer: C) 12

Explanation:

We can apply at max of 12 triggers in a table.

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Filed Under: Oracle
Job Role: Analyst , IT Trainer

4 5224
Q:

Data flow analysis studies

A) The use of data on paths through the code B) Possible communications bottlenecks in a program
C) The intrinsic complexity of the code D) The rate of change of data values as a program executes
 
Answer & Explanation Answer: A) The use of data on paths through the code

Explanation:

Data flow analysis studies the use of data on paths through the code.

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8 5219
Q:

The PHP Syntax is most similar to

A) Visual Basic B) VB Script
C) PERL & C D) Java Script
 
Answer & Explanation Answer: C) PERL & C

Explanation:

PHP is similar to the C style syntax in terms of keywords and language syntax.

 

If conditions, for and while loops, and function returns are similar in syntax to languages such as C, C++, C#, Java and Perl.

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1 5204
Q:

Chennai express left Hyderabad for Chennai at 14 : 30 hours, travelling at a speed of 60 kmph and Charminar Express left Hyderabad for Chennai on the same day at 16 : 30 hours, travelling at a speed of 80 kmph. How far away from Hyderabad will the two trains meet? 

A) 360 kms B) 480 kms
C) 520 kms D) 240 kms
 
Answer & Explanation Answer: B) 480 kms

Explanation:

Now, the distance covered by Chennai express in 2 hrs = 60 x 2 = 120 kms

Let the Charminar Express takes 't' hrs to catch Chennai express

=> 80 x t = 60 x (2 + t)

=> 80 t = 120 + 60t

=> t = 6 hrs

 

Therefore, the distance away from Hyderabad the two trains meet = 80 x 6 = 480 kms.

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