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Q:

What is the value of (cos30° + 1/2) ?

A) (√3+1)/√3 B) (√2+1)/√2
C) (√3+1)/2 D)  (2√3+1)/√3
 
Answer & Explanation Answer: C) (√3+1)/2

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Filed Under: Simplification
Exam Prep: AIEEE , Bank Exams

Q:

The bar chart represents marks of four students S1, S2, S3 and S4 in Physics and Chemistry. Consider the bar chart and answer questions based on it.

What is the ratio of marks obtained in Physics of S3 to that of S1?

A) 11/19 B) 15/19
C) 13/19 D) 17/19
 
Answer & Explanation Answer: B) 15/19

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Filed Under: Bar Charts
Exam Prep: Bank Exams

Q:

The bar chart represents marks of four students S1, S2, S3 and S4 in Physics and Chemistry. Consider the bar chart and answer questions based on it.

 What is the ratio of total marks in both subjects obtained by S2 to that of S4?

 

A) 25/31 B) 30/31
C) 36/31 D) 31/25
 
Answer & Explanation Answer: B) 30/31

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Filed Under: Bar Charts
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Q:

The bar chart represents marks of four students S1, S2, S3 and S4 in Physics and Chemistry. Consider the bar chart and answer questions based on it.

 

What is the ratio of total marks of all students in Chemistry to that of Physics in percentage?

A) 94% B) 96%
C) 98% D) 102%
 
Answer & Explanation Answer: C) 98%

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Filed Under: Bar Charts
Exam Prep: Bank Exams

Q:

90% of people fail to solve this math puzzle?

ninety_percent_fail_to_answer_this1588595933.jpg image

A) 45 B) -20
C) 35 D) -60
 
Answer & Explanation Answer: D) -60

Explanation:

A - A - A = 20
B - B - B = 15
C - C - C = 25

A = -20
B = -15
C = -25

=> A + B + C = (-20)+(-15)+(-25) = -20 - 15 - 25 = -60.

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Filed Under: Math Puzzles
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Q:

If P denotes +, Q denotes -, R denotes '÷', and S denotes X, then: 18S36R12Q6P7 = ?

A) 115 B) 65
C) 55 D) 25
 
Answer & Explanation Answer: C) 55

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Filed Under: Coding and Decoding
Exam Prep: Bank Exams

Q:

If cos3A = X, then value of X?

A) 4cos3A - 3cosA B) 4cos3A + 3cosA
C) 3cosA - 4cos3A D) cosA + 4cos3A
 
Answer & Explanation Answer: A) 4cos3A - 3cosA

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Filed Under: Simplification
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Q:

Find the logic and solve this mathematical puzzle?

solve_this_maths_puzzle1565956551.jpg image

A) 112 B) 72
C) 127 D) 144
 
Answer & Explanation Answer: D) 144

Explanation:

In the given puzzle, the logic is

2 + 3 = 10 => (2 + 3) * 2 = 10

6 + 3 = 54 => (6 + 3) * 6 = 54

8 + 3 = 88 =>  (8 + 3) * 8 = 88

Similarly,

9 + 7  => (9 + 7) * 9 = 16 x 9 = 144.

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Filed Under: Math Puzzles
Exam Prep: AIEEE , Bank Exams , CAT , GATE
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