Question
If 2 pens are drawn at random what is the probability
that none of them is blue? A basket contains 3 blue, 5black and 3 red pens.Solution
Let S be the sample space. Then, N(S) = number of ways of drawing 2 pens out of 11 = ¹¹Cā = (11 ×10 )/(2 ×1) = 55 Let E = event of getting none of them is blue. n(E) = āøCā = (8 ×7 )/(2 ×1) = 28 n(P) = (n(E))/(n(S)) = 28/55
Four letter-clusters have been given, out of which three are alike in some manner and one is different. Select the one that is different.
(Note: ...
Six boys-P, Q, R, S, T and U- are sitting around a circular table, not necessarily in the same order. P and S are sitting together. Neither Q nor T is s...
Eight north-facing restaurants named P, Q, R, S, T, U, V and W are located in a straight line. S is second to the left of T. W is third to the left of P...
Four figures have been given, out of which three are alike in some manner and one is different. Select the one that is different.
Choose the correct mirror image of the following figure. (Note: Mirror is placed vertically towards the right of the figure)
Select the combination of letters that when sequentially placed in the blanks of the given series will complete the series.
C R_ S _ _ R O S_ C_ ...
Find the odd āletter groupā from the given alternatives:
Select the option figure in which the given figure (X) is embedded as its part (rotation is NOT allowed).
Which of the answer figure, completes the figure matrix?
Select the number from among the given options that can replace the question mark (?) in the following series.
337, 354, 373, 394, 417, ?
Relevant for Exams:
