Question
A bag contains 13 white and some black balls. If the
probability of drawing a black ball from the bag is twice that of drawing a white ball, find the number of black balls in the bag.Solution
Given, Number of white balls = 13 Let x be the number of black balls. Total number of balls in the bag = 13 + x Also, the probability of drawing a black ball from the bag is twice that of drawing a white ball. ⇒ x/(13 + x) = 2[13/(13 + x)] ⇒ x = 26 Hence, the number of black balls in the bag = 26.
Statements: E ≤ F < G; E ≥ H < I; H > J ≥ K
Conclusions:
I. H ≤ F
II. I ≥ K
III. H > G
Select the word that CANNOT be formed by using the letters of the given word.
COURAGEOUS
A cube is formed by folding the given sheet of paper. What would be the number on the opposite side of number ‘2’?
If all the vowels in the word ‘REJECTION’ are changed to the next letter in the English alphabetical order and all the consonants remain the same th...
What should come in place of the question mark (?) in the given series based on the English alphabetical order?
 TUO, VWR, XYU, ZAX, ?
Four of the following five are alike in a certain way and hence they form a group. Which one of the following does not belong to that group?Â
If all the digits of the number ‘869534172’ are arranged in ascending order from left to right, what will be the product of the fifth from the right...
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.Â
In a certain code language, if the word 'HOLMES' is coded as 'PINMTF', then how will 'CREATE' be coded?
If each vowel of the word ' QUALITY ' is changed to the next letter of the English alphabets and each consonant is changed to the previous letter of the...
