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Q:

Crack the series missing Number Puzzle ?

series_new1509425436.jpg image

A) 330 B) 253
C) 221 D) 363
 
Answer & Explanation Answer: D) 363

Explanation:

The given numbers in the series follows a pattern that,

3

(3 x 3) + 3 = 12

(12 x 3) + 3 = 39

(39 x 3) + 3 = 120

(120 x 3) + 3 = 363.

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Filed Under: Number Puzzles
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Q:

Which Company is the biggest player in the microprocessor industry  ?

A) AMD B) IBM
C) Motorola D) Intel
 
Answer & Explanation Answer: D) Intel

Explanation:
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Filed Under: Computer
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Q:

A student multiplied a number by 2/5 instead of 5/2. What is the percentage error in evaluation ?

A) 52% B) 64%
C) 84% D) 77%
 
Answer & Explanation Answer: C) 84%

Explanation:

Let the number be 'x'

 

Then, according to the given data,

 52x-25x52xx100

 

= 2125x100

 

= 84%

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Filed Under: Percentage
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Q:

Where and when the first session of Indian National Congress was held ?

A) Delhi, 1890 B) Mumbai, 1885
C) Madras, 1887 D) Kolkata, 1889
 
Answer & Explanation Answer: B) Mumbai, 1885

Explanation:

The first session of Indian National Congress was held from 28–31 December 1885, in Mumbai and was attended by 72 delegates. Womesh Chandra Bonnerjee was the first president of the Indian National Congress (INC), a voice of Indian opinion to the British government.

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Filed Under: Indian History
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Q:

Whether the last number 240 in the following series is according to the remaining numbers pattern ?

2, 4, 12, 48, 240

A) TRUE B) FALSE
Answer & Explanation Answer: A) TRUE

Explanation:

The given series follows,


2


2 x 2 = 4


4 x 3 = 12


12 x 4 = 48


48 x 5 = 240.

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Subject: Number Series
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Q:

Three taps P, Q and R can fill a tank in 12 hrs, 15 hrs and 20 hrs respectively. If P is open all the time and Q and R are open for one hour each alternately, starting with Q, then the tank will be full in how many hours ?

A) 9 hrs B) 7 hrs
C) 13 hrs D) 11 hrs
 
Answer & Explanation Answer: B) 7 hrs

Explanation:

Given,

P can fill in 12 hrs

Q can fill in 15 hrs

R can fill in 20 hrs

=> Volume of tank = LCM of 12, 15, 20 = 60 lit

=> P alone can fill the tank in 60/12 = 5 hrs

=> Q alone can fill the tank in 60/15 = 4 hrs

=> R alone can fill the tank in 60/20 = 3 hrs

Tank can be filled in the way that

(P+Q) + (P+R) + (P+Q) + (P+R) + ....

=> Tank filled in 2 hrs = (5+4) + (5+3) = 9 + 8 = 17 lit

=> In 6 hrs = 17 x 6/2 = 51 lit

=> In 7th hr = 51 + (5+4) = 51 + 9 = 60 lit

=> So, total tank will be filled in 7 hrs.

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Filed Under: Time and Work
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Q:

What will come in place of question mark(?) in the following number series ?

6859       5832     ?      4096     3375

A) 4589 B) 4913
C) 5013 D) 5169
 
Answer & Explanation Answer: B) 4913

Explanation:

The given series follows a pattern that,

19 x 19 x 19 = 6859

18 x 18 x 18 = 5832

17 x 17 x 17 = 4913

16 x 16 x 16 = 4096

15 x 15 x 15 = 3375

So, the missing number in the given series = 4913  

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Filed Under: Number Series
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Q:

Indian-American girl won 2017 Young Scientist Challenge for water contamination detection device. What is her name ?

A) Kavita Kumari B) Gitanjali Rao
C) Hetal Rao D) Savita Sharma
 
Answer & Explanation Answer: B) Gitanjali Rao

Explanation:

Gitanjali Rao, an 11-year-old Indian-American schoolgirl, was named as "America’s top young scientist" for inventing a cost-effective, quick lead-contamination detector in water. The seventh-grade student was inspired by the large-scale lead contamination in water in Flint, Michigan, that came to light recently.

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Filed Under: Famous Personalities
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