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
How many meaningful words (more than 3 letters) can be formed using the letters of the given word 'DESIGNATION' ?
Six family members are sitting in a row. Ana is sitting towards immediate left of Ben and immediate right of Cen. Cen is sitting to immediate right of F...
In the following question, select the word which can be formed using the letters of the given word.
UNMORAL
Which among the following words can be formed using the letters of the given word only once?
PLACEMENT
- Which among the following words cannot be formed using the letters of the given word "CHOCOLATE" using each letter only once?
How many such pair(s) of letters are in the word “ABNORMAL” which has as many letters between them (both forward and backward) as in the English alp...
In the following question, select the word which can be formed using the letters of the given word.
SUSCEPTIBLE
Which of the following words cannot be formed by using the letters of the word ‘ INSTRUCTION ’?
Statements: H > E = Z ≤ L = R > S ≥ N = W
Conclusion
I: W < L
II: R ≥ E
Four number-pairs have been given, out of which three are alike in some manner and one is different. Select the number-pair that is different.
...
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