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Q:

In an election between two candidates 70% of the voters cast their votes, out of which 2% of the votes were declared invalid. A candidate got 7203 votes which was 60% of the total valid votes. Find the total number of voters enrolled in that election.

A) 18050 B) 17500
C) 17000 D) 7203
 
Answer & Explanation Answer: B) 17500

Explanation:

Let total number of votes enrolled = x
No. of voted cast = 70% of x = 0.7x
Valid votes = 98% of 0.7x
⇒ 60% of total valid votes = 7203 = 60% of 98% of 0.7x
⇒ 0.6 X 0.98 X 0.7x = 7203
⇒ x = 7203 / (0.6 X 0.98 X 0.7)
⇒ x = 17500

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Filed Under: Percentage
Exam Prep: Bank Exams

Q:

The average age of students of a class is 15.8 years. The average age of boys in the class is 16.4 years and that of the girls is 15.4 years. The ratio of the number of boys to the number of girls in the class is:-

A) 1:2  B) 2:3
C) 3:4 D) 3:5
 
Answer & Explanation Answer: B) 2:3

Explanation:

Let the ratio be x : y
Total boys = 16.4 X x
Total girls = 15.4 X y
Total number of students in class = 16.4x + 15.4y
The average age of all students is 15.8
The total age of boys is 15.8x
The total age of girls is 15.8y
16.4x + 15.4y = 15.8x + 15.8y
0.6 x = 0.4 y
x/y = 0.4/0.6 = 2/3

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Filed Under: Ratios and Proportions
Exam Prep: Bank Exams

Q:

The number whose square is equal to the difference of the squares of 37 and 23 is:-

A) 45.09 B) 28.98
C) 47.09 D) 28
 
Answer & Explanation Answer: B) 28.98

Explanation:

372  232 =840 Required number =840 = 28.98

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Filed Under: Simplification
Exam Prep: Bank Exams

Q:

Which number will complete the series?
1,8,27,64,125,216,________

A) 354 B) 343
C) 392 D) 245
 
Answer & Explanation Answer: B) 343

Explanation:
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Q:

Find the odd word/letters/number pair from the given alternatives.
(A) 24
(B) 49
(C) 64
(D) 81

A) A B) B
C) C D) D
 
Answer & Explanation Answer: A) A

Explanation:
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Filed Under: Arithmetical Reasoning
Exam Prep: Bank Exams

Q:

Find the odd word/letters/number pair from the given alternatives.
(A) ZVR
(B) ZYX
(C ) QMI
(D) IEA

A) A B) B
C) C D) D
 
Answer & Explanation Answer: B) B

Explanation:
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Filed Under: Arithmetical Reasoning
Exam Prep: Bank Exams

Q:

Find the odd word/letters/number pair from the given alternatives.
(A) Violin
(B) Piano
(C) Flute
(D) Harmonium

A) A B) B
C) C D) D
 
Answer & Explanation Answer: C) C

Explanation:
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Filed Under: Arithmetical Reasoning
Exam Prep: Bank Exams

Q:

Select the related word/letters/number from the given alternatives.
841 : 29 :: 289 : ?

A) 23 B) 21
C) 17 D) 13
 
Answer & Explanation Answer: C) 17

Explanation:
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Filed Under: Analogy
Exam Prep: Bank Exams