Question
Three cards are drawn one after another with
replacements from a pack of cards. What is the probability of getting the first card a Jack, the second card a black card, and the third card an odd-numbered card?Solution
In case of replacement- probability of jack = 4/52 probability of black =26/52 p of odd numbers = 5×4=20/52 probability = 4/52) × (26/52) × (20/52) =1/13 ×1/2 × 5/13 =5/338
612, 487,?, 396, 388, 387
Find the missing number in the given number series.
1, 2, 6, 24, 120, ?What will come in place of the question mark (?) in the following series?
36, 85, ?, 230, 330, 451
Find the missing term in the series:
2, 5, 11, 23, 47, ?
What will come in place of the question mark (?) in the following series?
400, 841, 1202, ?, 1716, 1885
44   45    41   50    ?      59    23
...221, 100, 0, -81, ?
...900 Â Â Â 90Â Â Â 18Â Â Â ? Â Â Â Â 2.16Â Â Â Â 1.08
16, 20, 11, 27, ?, 38
37, 57, 82, ?, 147, 187