Question
Five toys out of which 2 are identical robots and the
rest are different action figures are to be arranged in a row. Find the number of arrangements in which the two robots are not placed together.Solution
Total number of arrangements = 5! = 120 ways
If we treat the 2 robots as one group, arrangements among themselves = 2! = 2 ways Total arrangements = 120/2 = 60 ways
Number of arrangements of remaining 4 items = 4! = 24 ways
Therefore, required number of ways = 60 – 24 = 36 ways
- Who is mother of sister of U?
Who is the daughter-in-law of A?
Dharun has a brother Anand. Dharun is the son of Kumar. Krishnan is Kumar's father. How is Anand related to Krishnan?
If A + B means B is father of A and A % B means A is brother of B, A # B means B is husband of A. Which of the following shows that M is daughter in law...
If,
‘T + S’ means that T is the father of S,
‘T X S’ means that T is the mother of S,
‘T - S’ means ‘T’ is the wif...
Answer the questions based on the information given below:
There are seven members D, E, F, G, H, I, and J in a family of three generation. E...
‘ A + B ’ means ‘A is the sister of B’
‘ A = B ’ means ‘A is the daughter of B’
‘ A # B ’ means ‘A is the son o...
Answer the questions based on the information given below.
Seven persons (S, T, U, V, W, Y and Z) belong to a family of three generations. No...
How is L related to K?
A + B means B is brother of A.
A - B means A is mother of B.
A x B means A is father of B.
A ÷ B means A is son of B.
