Question
Select the odd group of numbers. (NOTE: Operations
should be performed on the whole numbers, without breaking down the numbers into its constituent digits. E.g.,43 - Operations on 43 such as adding /subtracting /multiplying etc. to 43 can be performed. Breaking down 43 into 4 and 3 and then performing mathematical operations on 4 and 3 is not allowed)Solution
Logic: First number x 4 = Second number & Second number × 8 = Third number. (7 - 28 - 224) 7 × 4 = 28 & 28 x 8 = 224 (Correct) (5 - 20 - 160) 5 x 4 = 20 & 20 × 8 = 160 (Correct) (8 - 32 - 256) 8 × 4 = 32 & 32 x 8 = 256 (Correct) (9 - 36 - 278) 9 × 4 = 36 & 36 × 8 = 288 (not equal to 278) (Incorrect) Hence, the correct answer is (D).
- If Ravi lies 4 out of 10 times and Vikram lies 6 out of 10 times, what is the probability that Ravi and Vikram will agree with each other?
- A pair of dice is rolled once, what is the probability that the sum of the numbers on top is 5?
Two players, A and B, play a tennis match. It is known that the probability of A winning the match is 0.65. What is the probability of B winning the mat...
Out of three girls and five boys, five children are to be randomly selected for a dance programme. What is the probability that all the selected childre...
If the letters of the word PARAM are arranged at random, what is the probability that all vowels will come together?
A bag contains 8 black and 10 white balls. One ball is drawn at random. What is the probability that the ball drawn is white?
...A box contains ‘x + 1’ green balls, ‘x + 4’ blue balls and ‘x – 2’ yellow balls. If the probability of drawing a yellow ball is 1/30 less ...
- A bag contains six green balls, four red balls and two yellow balls. Two balls are drawn at random, what is the probability that both are of the same colou...
- Dravid who is playing a game with his younger brother threw a dice three times. What is the probability of getting at least four on each attempt?
21 rotten bananas are accidentally mixed with 135 good ones. It is not possible to just look at a banana and tell whether or not it is rotten. One banan...
