How do we solve this question?
Points A and B are 150 km apart. Cars 1 and 2 travel from A to B, but car 2 starts from A when car 1is already 20 km away from A. Each car travels at a speed of 100 kmph for the first 50 km, at 50 kmph for the next 50 km and at 25 kmph for last 50km. The distance in kmph between car 2 & b when 1 reaches b is?
Can anybody please tell me the approach how to solve this ? 441.66 : 958.33
There are 8 points lying on a plane such that no two of the lines joining them are parallel and no three are concurrent except at the given points. If all the possible lines are drawn passing through every pair of these points, what is the number of points of intersection of the lines excluding the original 8 points?
If we take log for both equations, it's apparent we'll always have unique value of b in both. Why only II is possible? From I we have, a'b(a-1)=2a, even if we do log on both sides, for any value of a we'll have b 🙈
There are two vessels, P and Q, containing only milk and only water respectively. The volume of milk in P is the same as the volume of water in Q. Now one-third the contents of P are poured into Q, after which one-fourth the contents of Q are poured back into P. If this process is repeated 15 more times, what is the approximate final concentration of milk in vessel P?
DIRECTIONS for question 22: There are seven boxes numbered 1, 2, . . . . 7. Each box is to be filled up with either a red or a green or a blue ball. It is required that at least five of the boxes are filled with a green ball and all the boxes containing either a red or a blue ball are consecutively numbered (i.e., for example GGRBGGG is allowed but not GGRGBGG). In how many ways can the boxes be filled? Explanation please!
Straight from my memory palace! Three diameters divide a circle in 6 identical parts. At least one among Amma, Baba and Chacha are to be placed in these parts (not more than one person in any part) such that no two people with their initials as consecutive letters are in adjacent parts. In how many ways can this be done?
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Hi folks,
Is it justifiable to take a year gap after B.com? I know it is hard for Engineers but Can B.com peeps expect a little bit lineanecy?
Approach for this question?
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Q: If set A contains five elements and set B contains four elements, how many different onto mappings from A to B are possible?
5c2 (Considering 2 elements of A are mapped onto one el of B) * 4c1 * 3!. Why aren't we considering if each element of A is mapped onto all elements of B >?
4:
In a college of 525 students, each student takes at least two items from among idly, dosa, puri and chapathi for his breakfast. If 375 students take idly, 375 students take dosa, 375 students take puri and 375 students take chapathi for their breakfast, the number of students who take all the four items is at most
On the morning of friendship day, a teacher tookn friendship bands to her class, intending to distribute these bands among her students. She calculated that these would be exactly sufficient, if every student of her class gave one band to every other student in the class. However, by noon she observed that exactly two students had not turned up and hence exactly n – 50 bands were used up. If in the afternoon, exactly one of these two students turned up, then find the number of bands that remained unused.
FOOD FOR THOUGHT FRIDAY
A had a certain amount of money. B had seven times the amount that A had. A bought a certain number of gold coins and was left with one-third the cost of a gold coin. B bought as many gold coins as he could and found that, if he had Rs.7,500 more, he could have bought one more gold coin. Find the cost of each gold coin.