3100+ Mental Ability Reasoning Questions and Answers with Explanation

Q:

Choose the correct alternative that will continue the same pattern and replace 'x' in given series 1,2,6,15,31,56,x

A) 65	B) 78
C) 81	D) 92

Answer & Explanation Answer: D) 92

Explanation:

The pattern is + 1*1,+ 2*2, +3*3, + 4*4,+ 5*5,+ 6*6, . . . . . . .
So missing term is 56+36=92

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Filed Under: Number Series

12 8765

Q:

Which of the following is the sixth to the left of the twentieth from the left end of the below arrangement ?
BM%R#J@K!DF69L4*15NEP23AYQZ#7UG

A) L	B) K
C) 4	D) 9

Answer & Explanation Answer: A) L

Explanation:

The twentieth element in the above arrangement is 'E'.
Then, the sixth element to the left of 'E' is 'L'.

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Filed Under: Alphabet Test
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12 8760

Q:

How many A's are there in the following sequence which are immediately followed by B as well as immediately preceded by Z?

A M B Z A N A A B Z A B A Z B A P Z A B A Z A B

A) Three	B) Two
C) One	D) More than three

Answer & Explanation Answer: A) Three

Explanation:

The letter A satisfying the following Structure ZAB

A M B Z A N A A B Z A B A Z B A P Z A B A Z A B

Answer (A) is correct

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Filed Under: Alphabet Test
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5 8755

Q:

How many number of weights do you need to weight 31 kg of Rice if you have one kg of weight stone ?

A) 3	B) 5
C) 7	D) 9

Answer & Explanation Answer: B) 5

Explanation:

There are total 5 ways.
we have only one kg of weight so,
2kg = 1kg + 1kg
4kg = 1 + 2 + 1
8kg = 1 + 2 + 4 + 1
16kg = 1 + 2 + 4 + 8 + 1
31kg = 1 + 2 + 4 + 8 + 16
So 5 weights are needed.

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Filed Under: Arithmetical Reasoning
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11 8740

Q:

In a beach, Renu is running with her children and there she met Vishal and Laxmi. Vishal introduces Ravi to those children as " This person is the daughter of your mother's father's mother and is my sister." How is Vishal and Laxmi related to Renu ?

A) Brother and Sister	B) Uncle and Aunt
C) Father and Mother	D) Can't determine

Answer & Explanation Answer: B) Uncle and Aunt

Explanation:

Daughter of your mother's father's mother => Maternal grandmother => Renu's Aunt.

Hence, Laxmi is Renu's Aunt and Vishal is Renu's Uncle.

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Filed Under: Blood Relations
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27 8693

Q:

Which is the third number to the left of the number which is exactly in the middle of the following sequence of numbers?

1 2 3 4 5 6 7 8 9 2 4 6 8 9 7 5 3 1 9 8 7 6 5 4 3 2 1

A) 3	B) 5
C) 4	D) 7

Answer & Explanation Answer: C) 4

Explanation:

There are 27 numbers in the given sequence

So, middle number = 14th number = 9

Clearly, the third number to the left of this 9 is 4

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Filed Under: Number, Ranking and Time Sequence Test

18 8671

Q:

Chromite : Chromium : : Ilmenite :?

A) Cobalt	B) Titanium
C) Limestone	D) Manganese

Answer & Explanation Answer: B) Titanium

Explanation:

Chromite is a mineral of chromium and ilmenite is a mineral of titanium

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Filed Under: Analogy
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17 8662

Q:

Study the diagram given below and answer the questions based on it.

$∆$ represents Persons who like Reading

$○$ represents Persons who like Cycling

$□$ represents Persons who like Trekking

How many persons like Reading and Cycling but not Trekking?

A) 31	B) 12
C) 26	D) 28

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