AMCAT DETAILS comes again with another compilation of Quantitative questions which are important or comes in AMCAT exam. So prepare well and score well.

Question: Find the odd man out

125, 106, 88, 76, 65, 58, 53

A series of prime numbers starting from 5 are added with every number to get the next number

See the pattern:

53+5 =5858+7= 6565+11=7676+13 =8989+17=106106+19 = 125

It must be 89 instead of 88.

So c is the answer.

Question: Insert the missing number.11, 13, 17, 19, 23, 29, 31, 37, 41, (....)

A. 43

B. 47C. 53D. 51

Answer: (a)

They are a series of prime numbers:

11 13 17 19 23 29 31 37 41 '43'

Therefore the answer is 43

Question: Find the odd man out5, 15, 30, 135, 405, 1215, 3645A. 3645

B. 1215C. 405

D. 30

Answer: (d)

5*3=1515*3=4545*3=135135*3=405405*3=1215....

It must be 45 instead of 30.

So the answer is b.

Question: Find the odd man out.

3, 5, 7, 12, 17, 19

a) 19

b) 17

c) 5

d) 12

Answer: d)

Every number in the given series is odd and prime number except 12

Since, 12 is only an even and non prime number in this

The answer is d.

Question: Which one of the following is not a prime number?

A. 31

B. 61

C. 71

D. 91

Answer : (d)

Every number given in options have no factors other than one and itself except 91.

91 is not a prime No. which is divisible by 1,7, 13 and 91

Therefore the answer to this question is d.

Question: Find the odd man out

125, 106, 88, 76, 65, 58, 53

A. 125

B. 106C.88D. 76

Answer: (c)

B. 106C.88D. 76

Answer: (c)

**Detailed explanation:**

A series of prime numbers starting from 5 are added with every number to get the next number

See the pattern:

53+5 =5858+7= 6565+11=7676+13 =8989+17=106106+19 = 125

It must be 89 instead of 88.

So c is the answer.

Question: Insert the missing number.11, 13, 17, 19, 23, 29, 31, 37, 41, (....)

A. 43

B. 47C. 53D. 51

Answer: (a)

**Detailed Explanation:**

They are a series of prime numbers:

11 13 17 19 23 29 31 37 41 '43'

Therefore the answer is 43

Question: Find the odd man out5, 15, 30, 135, 405, 1215, 3645A. 3645

B. 1215C. 405

D. 30

Answer: (d)

**Detailed Explanation:**

5*3=1515*3=4545*3=135135*3=405405*3=1215....

It must be 45 instead of 30.

So the answer is b.

Question: Find the odd man out.

3, 5, 7, 12, 17, 19

a) 19

b) 17

c) 5

d) 12

Answer: d)

**Detailed Explanation:**

Every number in the given series is odd and prime number except 12

Since, 12 is only an even and non prime number in this

The answer is d.

Question: Which one of the following is not a prime number?

A. 31

B. 61

C. 71

D. 91

Answer : (d)

**Detailed Explanation:**

Every number given in options have no factors other than one and itself except 91.

91 is not a prime No. which is divisible by 1,7, 13 and 91

Therefore the answer to this question is d.

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