Question
A bag contains 6 blue balls, 5 green balls and 7 yellow
balls. Two balls are drawn simultaneously. Find the probability that both the balls are of same colour.Solution
Total number of balls in the bag = 6 + 5 + 7 = 18 Total possible outcomes = 18C2 = 153 Number of favourable outcomes = 6C2 + 5C2 + 7C2 = 15 + 10 + 21 = 46 Required probability = 46/153
What is the maximum number of rectangles in the given figure?
How many triangles are there in the given figure?
Rekha starts from her house and goes 3 km straight. Then she turns towards her left and goes 1 km. She again turns towards her left and goes 2 km. If sh...
statement:
Residents of this region are frequently faced with incidents of sudden power surges and voltage surges which cause damage to sensitive...
Three statements are given, followed by three conclusions numbered I, II and III.
Assuming the statements to be true, even if they seem to be a...
In this question, three statements are given, followed by three conclusions numbered I, II and III. Assuming the statements to be true, even if they see...
Four pairs of letter-clusters have been given, out of which three are alike in some manner and one is different. Select the one that is different.
In the following question, select the missing number from the given series.
?, 3, 5, 7, 11, 13
Select the option that is related to the third word in the same way as the second word is related to the first word.
Lazy : Hard-working : : Wealthy : ?
Relevant for Exams:
