Question
A bag contains 6 purple balls, 9 yellow balls and 5
green balls. Three balls are drawn at random. Find the probability that at least two balls are yellow.Solution
Total = 6 + 9 + 5 = 20
Required probability = (Two yellow and one other) + (Three yellow)
= 3 × [(9/20) × (8/19) × (11/18)] + (9/20 × 8/19 × 7/18)
= (2376/6840) + (504/6840)
= (2880/6840) = (24/57) = 8/19
Select the option that is related to the fifth number in the same way as the second number is related to the first number and the fourth number is rela...
If 43 # 24 = 20 and 35 # 15 = 20, then 48 # 33 = ?
In the word ‘MASTERMIND’, first all the letters are written in an alphabetical order form, then remove all the vowels from the arrangement then how ...
"Protein" is related to "Egg", in the same way as "Carbohydrate" is related to "____".
‘11' is related to '1320' following a certain logic. Following the same logic, '8' is related to '504'. To which of the following is '13' related foll...
If 23 @ 18 = 9 and 29 @ 24 = 21', then 24 @ 19 = ?'. What will come in place of question mark?
Which letter cluster will complete the given series?
LSKR, JOOT, HKSV, FGWX, DCAZ, ______
Four letter-clusters have been given, out of which three are alike in some manner and one is different. Select the letter-cluster that is different.
‘52’ is related to ‘7’ in the same way as ‘84’ is relate to ‘______’
In the following question, select the related number from the given alternatives.
75 : 32 :: 39: ?
