Question
The probability of selecting a rotten apple randomly
from a heap of 150 apples is 0.28. What is the number of rotten apples in the heap?Solution
Total number of apples in the heap = n(S) = 150 Let E be the event of selecting a rotten apple from the heap. Number of outcomes favourable to E = n(E) P(E) = n(E)/n(S) 0.28 = n(E)/150 ⇒ n(E) = 150 × 0.28 ⇒ n(E) = 42 Therefore, the number of rotten apples in the heap = 42
Answer the questions based on the information given below.
Nine persons Q, R, S, T, U, V, W, Y and Z live in a family of three generations. V...
How is B related to C?
Pointing to a woman, Naman said, "She is the daughter of the only child of my grandmother". How is the woman related to Naman?
Which of the following indicates that ‘T is paternal uncle of W’?
How is L related to K?
Answer the questions based on the information given below.
A family consists of ten members D, E, F, H, I, J, M, N, K and L. No single person i...
Which of the following indicates that ‘D is grandmother of T’?
How is P related to S?
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 H related to son of M?