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Q:

The mean of 21 observations (all different) is 40. If each observation greater than the median is increased by 21, then the mean of observations will become:

A) 50 B) 30
C) 50.5 D) 45
 
Answer & Explanation Answer: A) 50

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Filed Under: Average
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Q:

The mass number of an isotope of an element is 298. If its nucleus has 189 neutrons, what is its atomic number?

A) 298 B) 189
C) 109 D) 487
 
Answer & Explanation Answer: C) 109

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Filed Under: Chemistry
Exam Prep: AIEEE , Bank Exams

Q:

You are given a question and two statements. Identify which of the statements is/are necessary,Sufficient to answer the question.
M, A, N and K are standing in a row. Based on the following information, if we aimnge shortest to tallest, who is standing last?
Statements:
1. A is shorter than K
2. M is shorter than A

A) Statements 1 and 2 together are not sufficient B) Statement 1 and 2 together are sufficient to solve
C) Statements 1 alone is sufficient D) Statement 2 alone is sufficient
 
Answer & Explanation Answer: A) Statements 1 and 2 together are not sufficient

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Filed Under: Statement and Conclusions
Exam Prep: AIEEE , Bank Exams , CAT

Q:

If the present ages of a father and his son are 48 years and 28.8 years old respectively, then the father can say to his son, "I was ......... of your present age when you were born".

A) half B) two-third
C) one-fifth D) one-third
 
Answer & Explanation Answer: B) two-third

Explanation:

The present age of Father (f) = 48 and present age of son (s) = 28.8
The age of father at his sons birth is 48 - 28.8 = 19.2
Therefore the age of father was 2/3rd of his son's age at the time of his sons birth

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Filed Under: Problems on Ages
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Q:

Every month, Kritika spends 30% of her income on house rent and 60% of the rest on household expenditure. If she saves ₹ 6300 per month, what is her total monthly income?

A) ₹ 22,000 B) ₹ 20,500
C) ₹ 22,500 D) ₹ 25,000
 
Answer & Explanation Answer: C) ₹ 22,500

Explanation:

Let the monthly income be x
Kritika spends 30% of her income on house rent. The remaining amount will be 70% of x
Kritika spends 60% of the rest (70% of 60% = 42% of x )on household expenditure. The remaining amount will be 28% of x
If 28% of x is 6300 then 100% will be 22,500

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Filed Under: Percentage
Exam Prep: AIEEE , Bank Exams , CAT

Q:

In a code language, if LUCK is written as L2U1C3K1, then what is the last digit for the code for XEROX in that same language?

A) 4 B) 3
C) 2 D) 1
 
Answer & Explanation Answer: A) 4

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Filed Under: Coding and Decoding
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Q:

With whom did the Government of India sign a $ 120 million loan agreement to complete double-tracking and electrification of railway tracks along high-density corridors to improve the operational efficiency of India's railway network?

A) European Bank B) African Development Bank
C) International Monetary Fund (IMF) D) Asian Development Bank
 
Answer & Explanation Answer: D) Asian Development Bank

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Filed Under: General Awareness
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Q:

If X+Y=3,XY=2, find the value of X3-Y3

A) 7 B) 3
C) 5 D) 9
 
Answer & Explanation Answer: A) 7

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