@burnett @jaffa @Ytiam can you please point out the error in in this solution???..
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0 voters
What is the coefficient of x3y4z5 in the expansion of (xy + yz + zx)6?
Do explain it..
- 40
- 70
- 60
- 50
0 voters
1 + 2.(2^1) + 3.(2^2) + 4.(2^3) +........+ 100.(2^99) = ??? Do explain it!!!
- 100.(2^100)
- 99.(2^100) +1
- 99.(2^99) + 99
- 2^100
0 voters
Q. Find the sum of the remainders obtained when a number n is divided by 9 and 7 successively, if n is the smallest number that leaves respective remainders of 4, 6 and 9 when divided successively by 13, 11 and 15.
Ans. N=((11)(9)+6)13 + 4
Why does it not consider 15 and the quotient it produces?
Find the remainder of 2^133 divided by 133.
Following is the solution. @Buck.up
Can anyone explain it?!
The average weight of a class of 100 students is 45 kg. The class consists of two sections, I and II,
each with 50 students. The average weight, Wi , of Section I is smaller than the average weight Wii ,
of the Section II. If the heaviest student say Deepak, of section II is moved to Section I, and the
lightest student, say Poonam, of Section I is moved to Section II, then the average weights of the
two sections are switched, i.e., the average weight of Section I becomes Wii and that of Section II
becomes Wi . What is the weight of Poonam?
A: Wii – Wi = 1.0 .
B: Moving Deepak from Section II to I (without any move I to II) makes the average weights of the
two sections equal.
Pls. explain!!
- Mark (3) if the question can be answered using A and B together, but not using either A or B alone.
- Mark (4) if the question cannot be answered even using A and B together.
- Mark (2) if the question can be answered using B alone but not using A alone.
- Mark (1) if the questions can be answered using A alone but not using B alone.
0 voters
if a,b,c,d and e are positive real numbers such that abcde=32,then the minimum value of
(1+a)(1+b)(1+c)(1+d)(1+e) is?
the answer is given as 243,shouldn't it be the maximum value ?
Q2
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The sum of five real numbers is 8 and the sum of their squares is 16. What is the largest possible value for one of the numbers? (
a) 16/5 (b) 2 (c) 25/8 (d) none of these
The number of different ways dividing the set P of n elements into 2 non empty disjoint subsets whose union is P is
1) 2^(n-1) - 1
2)2^n - 1
3)1/2(2^n - 1)
4)none
|a-2|
- 35
- 244
- 289
- 324
0 voters
i have secured 76% in class 10th, 68%in class 12th, and have one year experience in lectureship of an engineering college, i got 65.32 % in btech (ME), are these scores too low to get admission in iims?or FMS ? , please help me should i prepare or not ? i am from OBC category ..
Given that m + n + p = 30, 3m + n - p = 50, m, n, p are positive and x = 5m + 4n + 2p; find the range of x.
A. (100, 120)
B. (110, 130)
C. (120, 130)
D. (130, 150)
there are 8436 steel balls,each with a radius of 1cm stacked in a pile with 1 ball on top,3 balls in the 2nd layer,6 in the 3rd layer,10 in fourth layer and so on,the number of horizontal layers in the pile is
- 30
- 45
- 36
- 42
0 voters
if a,b,c,d and e are positive real numbers such that abcde=32,then the minimum value of (1+a)(1+b)(1+c)(1+d)(1+e) is?the answer is given as 243,shouldn't it be the maximum value ?
243
what is the digit at the hundreth position of the epression 5^6^7^8?
- 4
- none of these
- 6
0 voters
what is the minimum value of (x-1)^2+(x-2)^2+.........+(x-97)^2 if x is real?
- 94326
- 25484
- 76048
- 56436
0 voters
If a2 + b2 = 1, c2 + d2 = 1 and ac + bd = 0, where a, b, c and d are real numbers, then what is the value of a2 + c2?
a. 2b. 1
c.0
d, Cannot be determined
P started running towards north at 6 am Q started running towards north at 8 am. At what time do they meet if their speed are in ratio 3:5?
what is the 250th letter in the series a,a,b,a,b,c,a,b,c,d......
plz share the approach too...