Question
A bag contains 5 pink balls, 10 grey balls, and 3 brown
balls. Two balls are drawn at random. Find the probability that the two balls are grey.Solution
Number of ways of selecting two grey balls = 10 C₂
Total number of balls = 5 + 10 + 3 = 18
Number of ways of selecting two balls = 18C₂
Probability = 10 C₂ ÷ 18 C₂ = (10 × 9) ÷ (18 × 17) = 90 ÷ 306 = 5/17
'←' stands for '+', '→' stands for "–", '↑' stands for '÷', '↓' stands for 'x', '^' stands for '=', then which of the following alternatives ...
Read the given statement and conclusions carefully and decide which of the conclusions logically follow(s) from the statement.
Statement:
<...Word Formation Puzzle: How many meaningful words can you form from the letters "LEAP"?
Which of the following letter-clusters can replace the question mark (?) in the given series to make it logically complete?
DNU, ?, NXE, SCJ, XHO
Select the option in which the given figure is embedded (rotation is NOT allowed).
Pointing to a child in the photograph, a gentleman said “His father’s father is my brother.” How is this gentleman related to the child?
Which of the following terms will replace the question mark (?) in the given series?
NLJ, JHF, FDB, BZX,?
If Neelam says, “Anita's father Raj Is the only son of my father-in-law Sunil", then how is Kavita, who is the sister of Anita, related to Sunil?
In a certain code language, ‘let it go’ is coded as ‘vc nt ap’ and ‘this is it’ is coded as ‘mq vc lh’. What is the code for ‘it’ in...
Which of the following letter-clusters will replace the question mark (?) in the given series?
EG, FF, HI, KH, OK, TJ, ?
