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Resolved in 1m
If $$x=2+2^{\frac{1}{3}}+2^{\frac{2}{3}}$$, find the value of $$x^3-6x^2+6x+12$$
Correct Answer: 14
I did not attempt the 2nd question but instinctively I wrote 8 (2^3 or x^3) instead of 2 and got the answer as 14. So, is this a correct way to think or just a coincidence?
Resolved in 1m
can the 6 number given don't repeat themself at the 3 places? because it is not mentioned if repeation is allowed or not?
Resolved in 1m
Why aren't we taking the distance travelled to cross the platform as 4L? Why is it 3L? Shouldn't we need to take the distance of train to pass the platform?
Resolved in 2m
In a rectangle ABCD, P bisects AD and E is a point on CP such that DE is perpendicular to CP. If the lengths of CP and DE are 50 cm and 15 cm respectively. What is the maximum possible ratio of AD and CD?
from the question as per the video solution, we can take area of PDC= (1/2)(50)(15) which is also equal to area of PDC=(1/2)(b*l). So, l*b=750. We need to find maximum value of 2b/l. How do we find maximum value of b and l from l*b=750??
Resolved in 2m
the second line says "... while pests were on the island...", but option B says "in the absence of pests". isn't this wrong?
Resolved in 3m
is this correct approach??
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Resolved in 3m
How do we get the Total CP and Total SP which is given in the text solution
Total CP= 880+1200
and Total SP = 61664+328CP
Resolved in 3m
Twenty teams, which were divided into 5 pools of 4 teams each, participated in a football tournament. A series of games were held in which a team in a pool played against all the other teams in that pool. The top scoring team in each of these pools moved to final round. The five teams that moved to the final round are Strikers, Royals, Challengers, Titans and Warriors. Each of these teams played against the remaining four teams. A win gives 3 points, a draw gives 1 point and a loss gives 0 points. After the tournament the final points of Strikers, Royals, Challengers, Titans and Warriors are 5, 6, 9, 4 and 4 respectively. Further:
(1) Strikers won against only Challengers.
(2) Titans won at least one match in the final round.
(3) Warriors won against Royals.
(4) Royals were not involved in any draw in the final round.
Which of the following is definitely true about the matches in the final round?
i am unable to understand why they strike of half of the table? if warrior didnt play any game how will it get 4 points..
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Resolved in 3m
Twenty contenders in a race have to take 4 boats taking 5 people each to the finish line. The first 5 take the 1st boat, next 5 the 2nd boat and so on. The 1st person to reach the boat is given the seat closest to the exit and so on. In how many ways can the contenders reach the finish line.
but they are asking .in how many ways can the contenders reach the finish line. they are asking in how many ways 20 contenders can reach the finish line. But if you consider a boat1, it has 5 people in it. Sure those 5 people are arranged in 5! ways. But if the boat1 reaches the finish line it means that all the 5 people in that boat won the race as a group. It's not an individual win for one person. Why didn't you consider this? (If boat1 wins, all the 5 people in that boat wins at that time)
Resolved in 3m
The sum of all the positive integer values that $$x$$ can take if it is known that $$\dfrac{x^3 - 4x^2 - 7x +10}{x^2 - 8x + 7} \geq 3x-1$$ is
Hii
Why has (x-1) been cancelled? Please explain indetail..........................................
