Question
The probability that Vipin passes the exam is (2/7) and the
probability that Saloni fails the exam is (5/12). If both Vipin and Saloni give the exam then find the probability that both of them have the same result.Solution
Probability that Vipin fails the exam = 1 - (2/7) = (5/7)
Probability that Saloni passes the exam = 1 - (5/12) = (7/12)
Required probability = (2/7) × (7/12) + (5/7) × (5/12)
= (14/84) + (25/84) = (39/84) = (13/28)
440 482 526 572 ? �...
24 72 180 360 540 ?
1600, 330, 48, 23.2, ?, 31.0464
3 ? 7 16 71 346
...84, 61, 80, 57, 76, ?
Select the number from among the given options that can replace the question mark (?) in the following series.
8, 27, 64, 125, 216, ?
21 23 26 ? 39 51
...If 152, 242, x , 332, 404, 314,
then find the value of (2x – 1)?
...12 10 13 18.5 25.50 ...
23 27 54 ? 195 231
...
