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 Quantitative Aptitude - Arithmetic Ability Questions

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Q:

What is the value of  4cos90-A sin390+A - 4sin90+A cos390-Acos180+8A2 ?

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

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Q:

The circular measure of the included angle formed by the hour hand and minute hand of a clock at 3 PM will be

A) π4 B) π3
C) 5π12 D) π2
 
Answer & Explanation Answer: D) π2

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Q:

70% of the cost price of a article is equal to the 40% of its selling price. What is the profit or loss percentage?

A) 63% loss B) 70% loss
C) 75% profit D) 80% profit
 
Answer & Explanation Answer: C) 75% profit

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Q:

If 40% of x = y, then y% of 40 is same as _____ of x.

A) 16% B) 4%
C) 8% D) 160%
 
Answer & Explanation Answer: A) 16%

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Q:

A man donates 30% of his wealth to charity. 30% and 25% of the remaining wealth to his wife and son respectively. The rest he divides equally between his three daughters. One of his daughter gets Rs 42 lakh as her share. What was the man's wealth (in Rs lakhs)?

A) 280 B) 400
C) 500 D) 350
 
Answer & Explanation Answer: B) 400

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Q:

The sum of ages of Ram and his son is 48. If his uncle's age is also included the average becomes 40. What is the age of Ram's uncle?

A) 48 B) 50
C) 72 D) 34
 
Answer & Explanation Answer: C) 72

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Q:

If Cosec θ = 25/7 , then what is the value of Cot θ?

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

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Q:

A bag contains 25 paise, 50 paise and 1 Rs coins. There are 220 coinsinall and the total amount in the bag is Rs. 160. If there arethrice as many 1 Rs. coins as there are 25 paise coins, then what is the number of 50 paise coins?

A) 60 B) 40
C) 120 D) 80
 
Answer & Explanation Answer: A) 60

Explanation:

Let there be x one rupee coin, y 50 paise coin, z 25 paise coinx + y + z = 220......(i)

Total amount = 160

Now, x + (y/2) + z = 160 ......(ii)

⇒4x + 2y + z = 640

Thrice as many 1 re coin as 25 paise

⇒x = 3z ......(iii)

On solving equation (i), (ii) and (iii), we get

z = 40x= 3* 40 = 120y = 220 –(120 + 40 ) = 60

So, 50 paise coin =60

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