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Q:

If FRIEND is coded as HUMJTK, how is CANDLE written in that code ?

A) EDRIRL B) DCQHQK
C) ESJFME D) DEQJQM
 
Answer & Explanation Answer: A) EDRIRL

Explanation:

The first, second, third, fourth, fifth and sixth letters of th word are respectively moved two, three, four, five, six and seven steps forward to obtain the corresponding letters of the code.

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Filed Under: Coding and Decoding

Q:

If in a code language, COULD is written as BNTKC and MARGIN is written as LZQFHM, how will MOULDING be written in that code ?

A) CHMFINTK B) LNKTCHMF
C) LNTKCHMF D) NITKHCMF
 
Answer & Explanation Answer: C) LNTKCHMF

Explanation:

 Each letter in the word is moved one step backward to obtain the corresponding letter of the code

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Filed Under: Coding and Decoding

Q:

Ravi's brother is 3 years senior to him. His father was 28 years of age when his sister was born while his mother was 26 years of age when he was born. If his sister was 4 years of age when his brother was born, what were the ages of Ravi's father and mother respectively when his brother was born ?

A) 32 years, 23 years B) 32 years, 29 years
C) 35 years, 29 years D) 35 years, 33 years
 
Answer & Explanation Answer: A) 32 years, 23 years

Explanation:

When Ravi's brother was born, let Ravi's father's age = x years and mother's age = y years.

Then, sister's age = (x - 28) years. So, x - 28 = 4 or x = 32.

Ravi's age = (y - 26) years. Age of Ravi's brother = (y - 26 + 3) years = (y - 23) years.

Now, when Ravi's brother was born, his age = 0 i.e. y - 23 = 0 or y = 23.

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Filed Under: Arithmetical Reasoning

Q:

A, B, C, D and E play a game of cards. A says to B, "If you give me 3 cards, you will have as many as I have at this moment while if D takes 5 cards from you, he will have as many as E has." A and C together have twice as many cards as E has. B and D together also have the same number of cards as A and C taken together. If together they have 150 cards, how many cards has C got ? 

A) 28 B) 29
C) 31 D) 35
 
Answer & Explanation Answer: A) 28

Explanation:

Clearly, we have :

A = B - 3 ...(i)

D + 5 = E ...(ii)

A+C = 2E ...(iii)

B + D = A+C = 2E ...(iv)

A+B + C + D + E=150 ...(v)

From (iii), (iv) and (v), we get: 5E = 150 or E = 30.

Putting E = 30 in (ii), we get: D = 25.

Putting E = 30 and D = 25 in (iv), we get: B = 35.

Putting B = 35 in (i), we get: A = 32.

Putting A = 32 and E = 30 in (iii), we get: C = 28.

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Filed Under: Arithmetical Reasoning

Q:

If you write down all the numbers from 1 to 100, then how many times do you write 3 ?

A) 11 B) 18
C) 20 D) 21
 
Answer & Explanation Answer: C) 20

Explanation:

Clearly, From 1 to 100, there are ten numbers with 3 as the unit's digit - 3, 13, 23, 33, 43, 53, 63, 73, 83, 93 and ten numbers with 3 as the ten's digit - 30, 31, 32, 33, 34, 35, 36, 37, 38, 39.

 

So, required number = 10 + 10 = 20.

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Filed Under: Arithmetical Reasoning

Q:

In a class of 60 students, the number of boys and girls participating in the annual sports is in the ratio 3 : 2 respectively. The number of girls not participating in the sports is 5 more than the number of boys not participating in the sports. If the number of boys participating in the sports is 15, then how many girls are there in the class ?

A) 20 B) 25
C) 30 D) Data inadequate
 
Answer & Explanation Answer: C) 30

Explanation:

Let the number of boys and girls participating in sports be 3x and 2x respectively.

 

Then, 3x = 15 or x = 5.

 

So, number of girls participating in sports = 2x = 10.

 

Number of students not participating in sports = 60 - (15 + 10) = 35.

 

Let number of boys not participating in sports be y.

 

Then, number of girls not participating in sports = (35 -y).

 

Therefore (35 - y) = y + 5 <=> 2y<=>  30<=> y = 15.

 

So, number of girls not participating in sports = (35 - 15) = 20.

 

Hence, total number of girls in the class = (10 + 20) = 30.

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Filed Under: Arithmetical Reasoning

Q:

I.  Class A has a higher enrollment than Class B.

II. Class C has a lower enrollment than Class B.

III.Class A has a lower enrollment than Class C.

If the first two statements are true, the third statement is

A) true B) false
C) uncertain D) none
 
Answer & Explanation Answer: B) false

Explanation:

From the first two statements, we know that of the three classes, Class A has the highest enrollment, so the third statement must be false.

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Filed Under: Logic

Q:

I.  All the offices on the 9th floor have wall-to-wall carpeting.

II. No wall-to-wall carpeting is pink.

III.None of the offices on the 9th floor has pink wall-to-wall carpeting.

If the first two statements are true, the third statement is

A) true B) false
C) uncertain D) none
 
Answer & Explanation Answer: A) true

Explanation:

If no wall-to-wall carpeting is pink and all the offices have wall-to-wall carpeting, none of the offices has pink wall-to-wall carpeting.

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Filed Under: Logic