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 Quantitative Aptitude - Arithmetic Ability Questions

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Q:

Find the value of

199992 x 200008 = ?

A) 39999799936 B) 39999999836
C) 39999999936 D) 39999999926
 
Answer & Explanation Answer: C) 39999999936

Explanation:
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Filed Under: Simplification
Exam Prep: Bank Exams

0 68455
Q:

What should come in place of question mark (?) in the following question?

41% of 600 - 250 = ? - 77% of 900

A) 889 B) 589
C) 789 D) 689
 
Answer & Explanation Answer: D) 689

Explanation:

41% of 600 - 250 = ? - 77% of 900

⇒ 246 - 250 = ? - 693

⇒ 246 -250 + 693 = ?

⇒ ? = 689

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

2 68438
Q:

Simplify : 5x - 2x(x-1)

 

A) 3x-2 B) 3x+2
C) 7x+2x2 D) 7x-2x2
 
Answer & Explanation Answer: D) 7x-2x2

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Exam Prep: Bank Exams

0 68406
Q:

A man's speed with the current is 15 km/hr and the speed of the current is 2.5 km/hr. The man's speed against the current is :

A) 9.5 km/hr B) 10 km/hr
C) 10.5 km/hr D) 11 km/hr
 
Answer & Explanation Answer: B) 10 km/hr

Explanation:

Man's rate in still water = (15 - 2.5) km/hr = 12.5 km/hr.

Therefore,  Man's rate against the current = (12.5 - 2.5) = 10 km/hr.

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Filed Under: Problems on Trains
Exam Prep: CAT
Job Role: Bank PO

109 67976
Q:

Solve the following :

38 - (60 ÷ 5 x 16 - 8 ÷ 2 ÷ 3) =?

 

A) 22 B) 29
C) 30 D) 37
 
Answer & Explanation Answer: A) 22

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Filed Under: Simplification
Exam Prep: Bank Exams

2 67909
Q:

Find the value of 

n+3n2+9n4+......∞

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

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4 67641
Q:

In how many different ways can the letters of the word 'LEADING' be arranged in such a way that the vowels always come together?

A) 720 B) 520
C) 700 D) 750
 
Answer & Explanation Answer: A) 720

Explanation:

The word 'LEADING' has 7 different letters.

When the vowels EAI are always together, they can be supposed to form one letter.

Then, we have to arrange the letters LNDG (EAI).

Now, 5 (4 + 1) letters can be arranged in 5! = 120 ways.

The vowels (EAI) can be arranged among themselves in 3! = 6 ways.

Required number of ways = (120 x 6) = 720.

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Filed Under: Permutations and Combinations

84 67618
Q:

The average weight of a class of 24 students is 35 kg. If the weight of the teacher be included, the average rises by 400 g. The weight of the teacher is : 

A) 45 kg B) 46 kg
C) 47 kg D) 48 kg
 
Answer & Explanation Answer: A) 45 kg

Explanation:

Weight of the teacher = (35.4 x 25 - 35 x 24) kg = 45 kg.

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Filed Under: Average

233 67512