Advertisements
Advertisements
प्रश्न
Six dice are stacked on the floor as shown in the figure below. On each dice, the sum of numbers on opposite faces is 7, i.e., if 1 is written on one face then 6 is written on the face opposite it and so on.
What is the maximum possible sum of numbers on the 21 visible faces?
पर्याय
88
89
96
147
उत्तर
89
Explanation:
Pair of numbers on opposite faces of the dice = (1 - 6), (2 - 5), (3 - 4)
To get maximum on visible faces, we should have the least value on invisible faces sum of the number on visible faces on top-placed dice
= 2 + 3 + 4 + 5 + 6 = 20
Sum of numbers on visible faces on middle row dice
= (6 + 5 + 2) + (6 + 4 + 4 + 3) = 31
Sum of numbers on visible faces on bottom row dice
= (6 + 5 +2) + (6 + 1) + (6 + 5 + 3 +4) = 38
Hence, total sum = 20 + 31 + 38 = 89
APPEARS IN
संबंधित प्रश्न
Choose the most appropriate option.
There are two urns. One contains two white balls and four red balls, the other contains three white and nine red balls. All balls are of the same shape and size. From each urn, one ball is drawn. What is the probability of getting both the balls of the same colour?
The marked price of an article is 20% more than the cost price. If the article is sold at a discount of 15% on its marked price, then the gain percent is
Four pipes A, B, C and D can fill a tank with water in 15, 20, 30 and 60 hours respectively. Pipe A is opened at 4 a.m., B at 5 a.m., C at 6 a.m. and D at 7 a.m. When is the tank filled up completely?
Solve the following question and mark the best possible option.
In a test, an examinee either guesses or copies or knows the answers to a multiple-choice question with four choices. The probability that he makes a guess is `1/3` and the probability that he copies the answer is `1/6`. The probability that his answer is correct given that he copied it, is `1/8`. Find the probability that he knew the answer to the question given that he correctly answered it.
A bag contains 6 black and 8 white balls. One ball is drawn at random. What is the probability that the ball drawn is white?
1 forgot the last digit of a 7-digit telephone number. If 1 randomly dial the final 3 digits after correctly dialing the first four, then what is the chance of dialing the correct number?
A Chartered accountant applied for a job in two firms X and Y. The probability of his being selected in firm X is 0. 7 and being rejected at Y is 0.5 and the probability of at least one of his applications being rejected is 0.6. What is the probability that he will be selected at least one of the firms?
A card is drawn at random from a well-shuffled pack of 52 cards. What is the probability of getting a two of hearts or a two of diamonds?
Kings and Queens of black colour are taken out from a deck of 52 playing cards. A card is drawn from the remaining well-shuffled cards. Probability of getting a spade card is:
If nC4 = 70 ,then find n.
