3100+ Mental Ability Reasoning Questions and Answers with Explanation

Q:

In the following question, select the missing number from the given series.

15, 7.5, 7.5, ?, 22.5, 56.25

A) 10.25	B) 11.25
C) 11	D) 12.5

Answer & Explanation Answer: B) 11.25

Explanation:

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Filed Under: Number Series
Exam Prep: Bank Exams , CAT

6 20484

Q:

In the following question, select the missing number from the given series.

567, 189, 63, ?, 7

A) 21	B) 30
C) 29	D) 31

Answer & Explanation Answer: A) 21

Explanation:

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Filed Under: Number Series
Exam Prep: Bank Exams

9 20465

Q:

Which of the following Venn- diagram correctly illustrates the relation ship among the classes : Carrot, Food, Vegetables

A) a	B) b
C) c	D) d

Answer & Explanation Answer: A) a

Explanation:

All Carrots are Vegetables. All Vegetables are Foods.

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Filed Under: Logical Venn Diagram

157 20431

Q:

It takes five minutes to pass a rumour from one person to two other persons. The tree of rumour continues. Find how many minutes does it take spread the rumour to 729 persons ?

A) 45 min	B) 25 min
C) 30 min	D) 36 min

Answer & Explanation Answer: C) 30 min

Explanation:

After 5 mins ..... 3 persons will get rumour
After 10 mins .... 3x2 + 3 = 9 = $3^{2}$ persons will get
after 15 =5x3 min ......9x2 + 9 =27 = $3^{3}$ persons will get news.
.
.
after 5x6 mins ... $3^{6}$ = 729 persons will get news.

Therefore, time taken to spread the rumour to 729 persons is 30 minutes.

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

23 20425

Q:

Find the odd one out

A) Flower : Petal	B) Circle : Arc
C) Cover : Page	D) Chair : Leg

Answer & Explanation Answer: C) Cover : Page

Explanation:

In all other pairs, second is a part of the first.

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Filed Under: Classification

170 20391

Q:

How many new year's greeting cards were sold this year in your shop ?

I. Last year 2935 cards were sold.

II. The number of cards sold this year was 1.2 times that of last year

A) If the data in statement I alone are sufficient to answer the question i	B) If the data in statement II alone are sufficient answer the question
C) If the data either in I or II alone are sufficient to answer the question;	D) If the data in both the statements together are needed.

Answer & Explanation Answer: D) If the data in both the statements together are needed.

Explanation:

From both the given statements, we find that the number of cards sold this year (2935 x 1.2) = 3522.

S0. both I and II together are required.

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Filed Under: Data Sufficiency

8 20300

Q:

382 473 568 728 847 629

If 382 is written as 238, 473 as 347 and so on, then which of the following two numbers will have least difference between them?

A) 473 & 382	B) 629 & 728
C) 629 & 847	D) 728 & 847

Answer & Explanation Answer: D) 728 & 847

Explanation:

The given numbers are :

382 473 568 728 847 629

When changes are made as given in the question, numbers become as follows :

238 347 856 872 784 962

Again now, find out the difference between the numbers given in options as given below:

(1) 473 - 382 => 347 - 238 = 109

(2) 629 - 728 => 962 - 872 = 90

(3) 629 - 847 => 962 - 784 = 178

(4) 728 - 847 => 872 - 784 = 88

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Filed Under: Number, Ranking and Time Sequence Test

20 20260

Q:

In the following question, select the missing number from the given series.

87, 62, 42, 27, 17, ?

A) 7	B) 12
C) 8	D) 10

Verbal Reasoning - Mental Ability Questions

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