Quantitative Aptitude - Arithmetic Ability Questions

Q:

If Cot θ = 24/7, then Sin θ = ?

A) 24/25 B) 8/25
C) 7/25 D) 9/25
 
Answer & Explanation Answer: C) 7/25

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Q:

If 3x+22x+1 = a2x+1+bx+2 be an identity, then the value of b

A) 0 B) -1
C) 2 D) 3
 
Answer & Explanation Answer: B) -1

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Q:

The 3rd and 8th term of an arithmetic progression are -14 and 1 respectively. What is the 11th term?

A) 14 B) 16
C) 20 D) 10
 
Answer & Explanation Answer: D) 10

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Q:

If the roots of the equation a(b  c)x2 + b(c  a)x + c(a  b) = 0 are equal, then which of the following is true?

A) b = ( a + c)/ ac B) 2/ b = (1/ a) + (1/ c)
C) 2 b = (1/ a) + (1/ c) D) abc = ab + bc + ca
 
Answer & Explanation Answer: B) 2/ b = (1/ a) + (1/ c)

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Q:

If (1 -­ cosA)/(1 + cosA) = x, then the value of x is

A) (cotA + cosecA)2 B) (cotA -­ cosecA)2
C) cotA -  cosecA D) cotA + cosecA
 
Answer & Explanation Answer: B) (cotA -­ cosecA)2

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Q:

Determine the value of ‘r’ for which the equation 13x + 5 = rx + 18 has no solution.

A) 0 B) 5
C) 13 D) 18
 
Answer & Explanation Answer: C) 13

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Q:

Select the odd word/letters/number/number pair from the given alternatives.

A) 462 B) 297
C) 674 D) 891
 
Answer & Explanation Answer: C) 674

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Q:

The value of tan(-405°)

A) 1 B) -1
C) 2 D) 0
 
Answer & Explanation Answer: B) -1

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