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Q:

Name the military exercise that is going on between Japanese and US military in northern Japan ?

A) Northern Viper B) Rimpac
C) Indra D) Valiant Shield
 
Answer & Explanation Answer: A) Northern Viper

Explanation:
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Q:

Tickets numbered 1 to 20 are mixed up and then a ticket is drawn at random. What is the probability that the ticket drawn has a number which is a multiple of 4 or 15 ?

A) 6/19 B) 3/10
C) 7/10 D) 6/17
 
Answer & Explanation Answer: B) 3/10

Explanation:

Here, S = {1, 2, 3, 4, ...., 19, 20}=> n(s) = 20
Let E = event of getting a multiple of 4 or 15
=multiples od 4 are {4, 8, 12, 16, 20}
And multiples of 15 means multiples of 3 and 5
= {3, 6 , 9, 12, 15, 18, 5, 10, 15, 20}.
= the common multiple is only (15).
=> E = n(E)= 6
Required Probability = P(E) = n(E)/n(S) = 6/20 = 3/10.

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Filed Under: Probability
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Q:

Total 100 members are writing exam. In that 48 members are writing first exam, 45 members are writing second exam and 38 members are writing third exam. 5 members are writing all the three exams. How many members are writing 2 exams ?

A) 26 B) 23
C) 27 D) 21
 
Answer & Explanation Answer: D) 21

Explanation:

Total number of exams written by 100 students = 48 + 45 + 38 = 131
Now let us say x members are writing only 1 exam, y members are writing only 2 exams, z members are writing only 3 exams.
Therefore, x + 2y + 3z = 131 also x + y + z = 100.
Given that z = 5. So x + 2y = 116 and x + y = 95.
Solving we get y = 21.
So 21 members are writing exactly 2 exams.

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Filed Under: Problems on Numbers
Exam Prep: AIEEE , Bank Exams , CAT
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6 5215
Q:

Solve the MathPuzzle Challenge ?

21728536_1414818525291914_2403155789974071436_n1505380084.jpg image

A) 4! B) 5!
C) 6! D) Can't be determined
 
Answer & Explanation Answer: D) Can't be determined

Explanation:

NUMERICAL has 9 positions in which 2, 4, 6, 8 are even positions.

And it contains 5 consonents i.e, N, M, R, C & L. Hence this cannot be done as 5 letters cannot be placed in 4 positions.

Therefore, Can't be determined.

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Filed Under: Math Puzzles
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11 5215
Q:

In recombinant DNA methods, the term vector can refer to

A) the sticky end of a DNA fragment B) a plasmid used to transfer DNA into a living cell
C) a DNA probe used to identify a particular gene D) the enzyme that cuts DNA into restriction fragments
 
Answer & Explanation Answer: B) a plasmid used to transfer DNA into a living cell

Explanation:

The term 'Vector' in recombinant DNA methods, refers to a plasmid or other agent used to transfer DNA into a living cell.

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Filed Under: Biology
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Q:

Sharan and Mayukh, working together, can complete a task in 18 days. However, Mayukh works alone and leaves after completing 1/3 of the task. Then, Sharan takes over and completees the remaining work by himself. As a result, the duo could complete the task in 40 days. How many days would Sharan alone have taken to do the job if Mayuk' had worked faster than Sharan ?

A) 24 B) 45
C) 72 D) 30
 
Answer & Explanation Answer: B) 45

Explanation:
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Filed Under: Time and Work
Exam Prep: Bank Exams

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Q:

Logical puzzle

You have 10 coins….arrange them in 4 straight lines such that each line contains 4 coins.

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Subject: Logic Puzzles Exam Prep: Bank Exams
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27 5214
Q:

Who has been appointed as the new Executive Director (ED) of RBI in place of US Paliwal ?

A) Anjali Singh B) Manish Tomar
C) Susheela Singh D) Surekha Marandi
 
Answer & Explanation Answer: D) Surekha Marandi

Explanation:

Surekha Marandi has been appointed as the new Executive Director (ED) of Reserve Bank of India (RBI). She succeeded U S Paliwal, who retired on December 31, 2016.

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