Question
If 54 [9] 3 and 108 [30] 5, then what is the value of Z
in 19 [Z] 18?Solution
The pattern is that the number in the middle is obtained by multiplying the numbers on each sides and then dividing the result by ‘18’.  
Hence, the correct answer is (B).
Three Marbles and three balls are kept in a box. If two items are chosen at random, Find the probability that one is marble and another one is ball?
A box contains 5 red, 6 green and 3 yellow balls. 2 balls are drawn at random. What is the probability that they are not of the same colour?
- Two numbers are chosen at random without replacement from the set of first 20 natural numbers. Find the probability that both the numbers are even.
18 rotten bananas are accidentally mixed with 132 good ones. It is not possible to just look at a banana and tell whether or not it is rotten. One banan...
A bag contains 3 black balls, 12 blue balls, and 3 yellow balls. Two balls are drawn at random. Find the probability that the two balls are blue.
A student is required to select 4 questions to attempt from a set of 10 questions. How many different ways can the student make this selection?
A basket contains 3 yellow, 5 purple and 3 red flowers. If 3 flowers are drawn at random, what is the probability that at least two are of same colour?
A bag contains 18 black and 20 white balls. One ball is drawn at random. What is the probability that the ball drawn is white?
Tom and Jerry throw alternatively a pair of dice. Tom wins if he throws 8 before Jerry throws 7 and Jerry wins if he throws 7 before Tom throws 8. Find...
A bag contains x white balls, (x + 4) black balls and (x + 8) yellow balls. If probability of getting a black ball is 1/12 more than that of getting a w...
Relevant for Exams:
