Aptitude and Reasoning Questions

Q:

Find the unit place digit in the expression (159)144 + (114)123 - (110)510 + (213)25

 

A) 3 B) 4
C) 7 D) 8
 
Answer & Explanation Answer: D) 8

Explanation:
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Filed Under: Simplification
Exam Prep: Bank Exams

1 212129
Q:

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z.

 

Which letter is in the middle of 13th letter from the left and 4th letter from the right?

A) R B) I
C) J D) S
 
Answer & Explanation Answer: A) R

Explanation:

Find out the positions of both the letters from the left and divide the sum of the positions of both the letters from the left by 2. Here 13+23=36. Now divide 36 by 2 , i.e 18. Hence R is the required letter.

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Filed Under: Alphabet Test

192 211888
Q:

A problem is given to three students whose chances of solving it are 1/2, 1/3 and 1/4 respectively. What is the probability that the problem will be solved?

A) 1/4 B) 1/2
C) 3/4 D) 7/12
 
Answer & Explanation Answer: C) 3/4

Explanation:

Let A, B, C be the respective events of solving the problem and A , B, C be the respective events of not solving the problem. Then A, B, C are independent event

A, B, C are independent events

Now,  P(A) = 1/2 , P(B) = 1/3 and P(C)=1/4

 PA=12, PB=23, PC= 34

 P( none  solves the problem) = P(not A) and (not B) and (not C)  

                  = PABC 

                  = PAPBPC          A, B, C are Independent                       

                  =  12×23×34  

                  = 14  

Hence, P(the problem will be solved) = 1 - P(none solves the problem) 

                = 1-14= 3/4

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Filed Under: Probability
Exam Prep: AIEEE , Bank Exams , CAT , GATE
Job Role: Bank Clerk , Bank PO

1036 210519
Q:

45% of 750  -  25% of 480 = ?

 

A) 337.50 B) 217.50
C) 376.21 D) 120
 
Answer & Explanation Answer: B) 217.50

Explanation:

Given expression = (45 x 750/100) - (25 x 480/100) = (337.50 - 120) = 217.50

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Filed Under: Percentage
Exam Prep: GATE , CAT , Bank Exams , AIEEE
Job Role: Bank PO , Bank Clerk

60 210101
Q:

3125  256  ?  4  1

Which number replaces the "?" in the question?

A) 27 B) 128
C) 32 D) 64
 
Answer & Explanation Answer: A) 27

Explanation:

In the given series numbers are arranged following the rule,

55,44, 33, 22, 11

 Therefore, the missing number is 27.

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Filed Under: Odd Man Out
Exam Prep: CAT
Job Role: Bank PO

18 207789
Q:

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

52.5% of 800 + 30.5% of 2800 = ? + 87.30

A) 1096.30 B) 1226.70
C) 1124.20 D) 1186.70
 
Answer & Explanation Answer: D) 1186.70

Explanation:

52.5% of 800 + 30.5% of 2800 = ? + 87.30

420 + 854 - 87.30 = ?

1274 - 87.30 = ?

? = 1186.70

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Filed Under: Percentage
Exam Prep: AIEEE , Bank Exams , CAT , GATE
Job Role: Bank Clerk , Bank PO

21 207176
Q:

What is the next number in series?

10, 9, 60, 90, 70, 66, ?

A) 73 B) 19
C) 96 D) 22
 
Answer & Explanation Answer: C) 96

Explanation:

ten = 3(number of letters)
nine = 4(number of letters)
sixty = 5(number of letters)
ninety = 6(number of letters)
seventy = 7(number of letters)
sixtysix = 8(number of letters)
ninetysix=96(number of letters)

Then, likwise choose the number which has 9 letters in its Spelling.

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Filed Under: Number Series
Exam Prep: AIEEE , Bank Exams , CAT , GATE , GRE
Job Role: Bank Clerk , Bank PO

81 203946
Q:

Insert the missing number.

2, 6, 12, 20, 30, 42, 56, (....)

A) 61 B) 64
C) 72 D) 70
 
Answer & Explanation Answer: C) 72

Explanation:

The pattern is 1 x 2, 2 x 3, 3 x 4, 4 x 5, 5 x 6, 6 x 7, 7 x 8.

So, the next number is 8 x 9 = 72.

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Filed Under: Odd Man Out

90 199676