From four positive real nos a, b, c and d, 4 distinct combination of sum of three numbers are formed S1, S2, S3 and S4. IF abcd = 5. Find the min value of S1S2S3S4.
1) 40 2) 135 3) 405 4) 1280
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can type a sheet in 6 minutes , bharat in 7 minutes and typist chinmay in 9 minutes . The average number of sheets typed per hour typsit for all three is :
P.S : Question bounce gaya please explain that also
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What is the minimum value of (x-1)^2 + (x-2)^2 +....+(x-97)^2 if x is real?
a)56436
b)76048
c)25484
d)94326
A certain clock marks every hour by striking a number of times equal to the hour, and the time require for a stroke is exactly equal to the time interval between strokes. At 6:00 the time lapse between the beginning of the first stoke and the end of the last stroke is 22 seconds. At 12:00, how many seconds elapse between the beginning of the first stroke and the end of the last stroke? a. 72 b. 50 c. 48 d. 46 e. 44
If 5x +2y +z =81, where x, y and z are distinct positive integers, then find the difference between themaximum and the minimum possible value of x + y + z.
The rates at which Alok and Bhaskar work are in the ratio 5 : 4. They work on alternate days to complete a job. Bhaskar started the job and he worked on the last day. The job was completed in 1 day more than the time that Alok alone would take to complete it. Find the time taken (in days) by them working together to complete the job.
41/9
31/3
41/3
44/9
In how many ways 6 students and 4 teachers be arranged in a raw so that no two teachers are together ?
what is the power if 3 in 11972-1 ?
A and B are single digit whole numbers and A > B. A + B and (A + B)^N where N is a natural number always end with the same digit. Let the product of A and B be equal to C. C and C^N end with the same digit. How many ordered pairs (A, B) satisfy the conditions above?
there are 5 math books,4 science books,3 literature books. How many different collections can a person make selecting at least 1 of each kind when all books are different.
approach 1...pretty simple (2^5-1)*(2^4-1)(2^3-1) ways as at least 1 of each kind is to be selected
approach 2....we first take out 1 of each kind to ensure that 1 of each kind is present in the collection.
That can be done in 5*4*3 ways. Now remaining books are merged as they are different.So it is equivalent to selecting 0 or more books from (5-1) +(4-1)+(3-1) books that is 2^9 ways..So total number of ways is 5*4*3*2^9
Puys plzz tell me why approach 2 is wrong??..1 is correct and straight forward..but why is two giving a different answer..Plzz clarify..I cnt see the difference.
there are two vessels p and q, containing only milk and only water respectively. volume of milk in p is same as volume of water in q. now one-third contents of p are poured in q, after which one fourth contents of q are poured back into p. if the process is repeated 15 more times, what is the approximate final concentration of milk in vessel p?
- 66.66%
- 33.33%
- 50%
- 60%
0 voters
Find the summation : Sigma(x^2* 5^x) where i=1 to 8.
1/x + 1/y= 1/375.. How many integral solutions are possible for x, y?
Find the no. of integral solutions of |x|+|y|+|z|=15
a)900
b)902
c)138
d)none of these
@Dazed-Confused @Harmeet89 @Dexian @sreekantkkurup
Approach please 😃
eight women of eight different heights are to pose for a photo in two rows of four. Each woman in the second row must stand directly behind a shorter woman in the first row. In addition, all of the women in each row must be arranged in order of increasing height from left to right. Assuming that these restrictions are fully adhered to, in how many different ways can the women pose ?
P.S. - any other method besides counting would be greatly appreciated
a basket contains 3 bananas and 4 mangoes.In hw many ways one or more fruits can be selected? (ney method apart from manually llisting each cases..)
Katrina walks down an up-escalator and counts 150 steps. Kareena walks up the same escalator and counts 75 steps. Katrina takes three times as many steps in a given time as Kareena. How many steps are visible on the escalator?
1) 105 2) 150 3) 135 4) 120
Highest power of 3 available in 58! - 38! ?
- 19
- 10
- 18
- 171
0 voters