Question
Two hats are picked at random, what is the probability
that all hats are of green colour? A box contains 6 red, 4 blue, 2 green and 4 yellow hats.Solution
Total number of hats = 6 + 4 + 2 + 4 = 16 Let S be the sample space. Then, n(S) = number of ways of drawing 2 hats out of 16 = ¹⁶C_₂ = (16 × 15)/( 2 × 1) = 120 Let E= event of drawing all the hats are of green colour n(E) = ²C_₂ = 1 ∴ P (E) = (n(E))/(n(S)) = 1/120
Complete the missing portion of the given pattern by selecting from the given options.
What should come in place of the question mark (?) in the given series?
53, 52, 39, 38, ?, 24
How many triangles are there in the given figure?
In this question, the statement is followed by two conclusions. Which of the two conclusion(s) is/are true?
Statement: Z > F ≥ A = B = G > S < ...
Identify the figure given in the options which when put in place of? will logically complete the series.
Read the given statements and conclusions carefully. You have to take the given statements to be true even if they seem to be at variance from commonly ...
Which of the following numbers will replace the question mark (?) in the given series?
990, 891, 792, ?, 594
In each of the number-pairs, the second number is obtained by performing a certain mathematical operation on the first number. Three of the following pa...
A is the good of B, which is the only son of C. D is the husband of C. What does A have to do with C?
Identify the figure given in the options which when put in place of the question mark (?) will logically complete the series?
Relevant for Exams:
