If 3 pens are drawn at random what is the probability that all are black?
Let S be the sample space. Then, N(S) = number of ways of drawing 3 pens out of 11 = ¹¹C₃ = (11 ×10 ×9)/(3 ×2 ×1) = 165 Let E = event of getting 3 from 5 black pens. n(E) = ⁵C₃ = (5 × 4 )/(2 ×1) = 10 n(P) = (n(E))/(n(S)) = 10/165 = 2/33
Pointing towards a photograph Amit says, “He is the son of my grandfather’s only child, then how is he related to Amit?
How is F related to D?
How is L related to F?
E is the only child of F and R is granddaughter of G, who is husband of F. I is father of U and son-in-law of F. How is E related to U?
Which of the following statements is/are definitely correct?
H is grandson of B, who is not mother of F. G is wife of F, who is father of H. A is mother of D, who is brother of F. How is B related to D?
Which of the following is definitely false?
If Chotu is Motu's brother, Chota is Motu's father, Gotu is Chota's father and Fatu is Gotu's father, how is Gotu related to Chotu?
'J+K' means 'J is the brother of K',
'J – K' means 'J is the daughter of K',
'J × K' means 'J is the father of K'.
If, 'V+K – ...
How is J related to H?
