Question
Nine boys have to stand in a circle. In how many ways
they are to be stand on the circumference of circle?Solution
Any boy may be stand on any place so there is no difference in clockwise and anticlockwise direction here.  Requirement permutations = 1/2 × (n - 1)!  => 1/2 × (9 - 1)!  => 1/2 × 8!  => 20160
In the question below three statements are given followed by two conclusions. You have to take the given statements to be true even if they seem to be ...
How many children does Mr. Raman has?
I. Mr. Raman has eight sons and each has one sister.
II. Number of sons of Mr. Raman is eight times ...
Statements:
Some guests are hosts
All hosts are invitations
No invitation is a decoration
Conclusion :
I. Some gu...
In the question below there are three statements followed by three conclusions I, II and III. You have to take the four given statements to be true eve...
Statements:
No cup is plate.
Only a few plate is saucer.
Some saucer is spoon.
All spoon is juicer.
Conclu...
Statements:
All Curtain are Wall
Only a few Rod are Curtain
No Sticker is Rod
Conclusions:
I. No Sticker is Wall
II. All Sticker are Wall is a possibility
Statements:
Only Orange are Kiwi.
Some Oranges are Cherries.
Only a few Papaya is Cherry.
Conclusions:
I. At least So...
Statements:
All summers are winters.
Only a few summers are spring.
Some springs are autumn.
No autumn is season.
...
In each of the questions below are given three statements followed by two conclusions numbered I and II. You have to take the given statements to be ...
Statements: No pen is a pencil.
                          All pencil are book.
 Conclusions: I. Some book ar...
Relevant for Exams:
