Quantitative Aptitude - Arithmetic Ability Questions

Q:

Find the value of x if 0.08x + 0.04y = 10 and 0.2(x-1) + 0.4y = 24.8

A) 125 B) 150
C) 1.25 D) 12.5
 
Answer & Explanation Answer: A) 125

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Q:

If sin ­-330° = x, then the value of x is

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

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Q:

X attempts 94 questions and gets 141 marks. If for every correct answer 4 marks is given, and for every wrong answer 1 mark is deducted, then the number of questions wrongly answered by X is __.

A) 45 B) 47
C) 57 D) 40
 
Answer & Explanation Answer: B) 47

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Q:

Find the odd numbers/letters/numbers from the given alternatives.

A) 1, 0.75, 0.5, 1.25 B) 4, 3, 2, 5
C) 1, 4, 2, 8 D) 2, 1.5, 1, 2.5
 
Answer & Explanation Answer: C) 1, 4, 2, 8

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Q:

If M = 0.1 + (0.1)2 + (0.01)2 and N = 0.3 + (0.03)2 + (0.003)2, then what is the value of M + N?

A) 0.411009 B) 0.413131
C) 0.313131 D) 0.131313
 
Answer & Explanation Answer: A) 0.411009

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Q:

Rathin is now 16 years old while his cousin is 7 years. After how many years will Ratin's age be 1.5 times that of his cousin?

A) 12 B) 11
C) 9 D) 10
 
Answer & Explanation Answer: B) 11

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Filed Under: Problems on Ages
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Q:

DEF is right angled at E. If m∠F = 45°, then find the value of (cosecD - 1/√3).

A) (√6-1)/√3 B) (1-√6)/√2
C) √3-2 D) (2-√3)/2√3
 
Answer & Explanation Answer: A) (√6-1)/√3

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Q:

If the sum of squares of two real numbers is 41 and their sum is 9. Then the sum of cubes of these two numbers is

A) 169 B) 209
C) 189 D) 198
 
Answer & Explanation Answer: C) 189

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Filed Under: Problems on Numbers
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