Aptitude and Reasoning Questions

Q:

To fill 8 vacancies there are 15 candidates of which 5 are from ST. If 3 of the vacancies are reserved for ST candidates while the rest are open to all, Find the number of ways in which the selection can be done ?

A) 7920 B) 74841
C) 14874 D) 10213
 
Answer & Explanation Answer: A) 7920

Explanation:

ST candidates vacancies can be filled by C35 ways = 10 

Remaining vacancies are 5 that are to be filled by 12 

=> C512= (12x11x10x9x8)/(5x4x3x2x1) = 792 

Total number of filling the vacancies = 10 x 792 = 7920

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Filed Under: Permutations and Combinations
Exam Prep: GATE , CAT , Bank Exams , AIEEE
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10 4367
Q:

Two filling taps P and Q together can fill a tank with rate of 40 lit/min and 60 lit/min respectively in 8 min. If a waste tap can empty the filled tank in 32 min, then what is the rate of waste tap ?

A) 34 lit/min B) 25 lit/min
C) 22 lit/min D) 18 lit/min
 
Answer & Explanation Answer: B) 25 lit/min

Explanation:

Given that the waste tap can empty the filled tank in 32 min.

Now, the rate at which the waste tap can empty the tank = (40 + 60)8/32 = 100/4 = 25 lit/min.

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Filed Under: Pipes and Cistern
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13 4364
Q:

For S = $21,000, payments (R) of $1500 at the end of each 6-month periodi= 10% compounded semi-annually. Find the minimum number of payments to accumulate 21,000.

A) 10 B) 11
C) 12 D) 13
 
Answer & Explanation Answer: B) 11

Explanation:

S=R[(1+i)^n-1)/i]

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Filed Under: Compound Interest
Exam Prep: Bank Exams
Job Role: Bank PO

0 4356
Q:

If - means ÷ , + means x , ÷ means - , x means +, then which of the following equations is correct?

A) 43 x 7 ÷ 5 + 4 - 8 = 25 B) 48 ÷ 5 + 8 x 10 - 2 = 03
C) 36 x 4 - 12 + 5 ÷ 3 = 420 D) 42 + 5 ÷ 6 x 8 - 3 = 28
 
Answer & Explanation Answer: B) 48 ÷ 5 + 8 x 10 - 2 = 03

Explanation:
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Filed Under: Coding and Decoding

3 4355
Q:

By investing Rs. 1620 in 8% stock, Michael earns Rs. 135. The stock is then quoted at ?

A) Rs. 145 B) Rs. 245.1
C) Rs. 96 D) Rs. 75
 
Answer & Explanation Answer: C) Rs. 96

Explanation:

Michel earns Rs. 135 by investing Rs. 1620
To earn Rs. 8 how much he have to invest...?

= (8 x 1620)/135 = Rs. 96

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Filed Under: Stocks and Shares
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8 4351
Q:

A constructor estimates that 4 people can paint Mr. Karthik's house in 6 days. If he uses 5 people instead of 4, how long will they take to complete the job ?

A) 3 days B) 26/3 days
C) 13/4 days D) 24/5 days
 
Answer & Explanation Answer: D) 24/5 days

Explanation:

we know that m1 x d1 = m2 x d2
=> 4 x 6 = 5 x d
where d = no. of days taken by 5 men to paint
d = 24/5 days.

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Filed Under: Time and Work
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5 4351
Q:

K and L start a business jointly. L invests Rs.16000 for 8 months and L remains in the business for 4 months. Out of the total profit B claims 2/7th share. How much money is contributed by B  ?

A) Rs. 9040 B) Rs. 10,400
C) Rs. 12,800 D) Rs. 6350
 
Answer & Explanation Answer: C) Rs. 12,800

Explanation:

16x8 : Px4 = 5:2

P = 12.8 => Rs.12,800

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Filed Under: Partnership
Exam Prep: AIEEE , Bank Exams , CAT , GATE
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4 4350
Q:

One word substitute for 'a post without remuneration?'

A) Voluntary B) Honorary
C) Involuntary D) Sinecure
 
Answer & Explanation Answer: B) Honorary

Explanation:

The One-word substitute for 'a post without remuneration' is Honorary.

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Filed Under: Alphabet Test
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7 4349