Assume that you have enough coins of 1, 5, 10, 25 and 50 cents. How many ways are there to make change for a dollar?
@placiddisciple @sagarcat @Shubh.i
X(X+1) + (X+1)(X+2) + (X+2)(X+3) + .....(X+n-1)(X+n) = 10n
at what value of "n" will the roots of the equation be consecutive nbs????
SHOW WORKING
(Ans. 11)
If (6)n1 * (7)n2 = (33)n2 ,where n1 and n2 are bases such that n1 ‰造 n2, how many different values can n1 assume?
1) 7
2) 6
3) 8
4) 13
In a Road Race, one of the three bikers was doing 15km less than the first and 3km more than the third. He also finished the race 12 minutes after the first and 3 minutes before the third.
Can you find out the speed of each biker, the time taken by each biker to finish the race and the length of the course?
Assume that there were no stops in the race and also they were driving with constant speeds through out the race.
I feel that this question is somewhat incomplete
FIND THE NUMBER OF NUMBERS THAT CAN BE FORMED USING THE DIGITS 1,2,3,4,3,2,1 ONLY ONCE SO THAT THE ODD DIGIT OCCUPY ODD PLACES ONLY ?
AND IF THE QUESTION HAD BEEN THAT 1 DIGIT NUMBER TO 7 DIGIT NUMBER CAN BE FORMED .. THEN WHAT WOULD HAVE BEEN THE ANSWER
APPROACH PLEASE
@scrabbler : bhaiya help. Q is :
A 6*8 rectangular paper is folded so that two diagonally opposite vertices overlap each other. Find the length of the crease formed.now i got a figure.is this fig. correct?also i got x as 25/4.now nt able to find the crease,EF.btao kaise hga.
Shabnam is considering three alternatives to invest her surplus cash for a week. She wishes to guarantee maximum returns on her investment. She has three options, each of which can be utilized fully or partially in conjunction with others.Option A: Invest in a public sector bank. It promise return of +0.10%Option B: Invest in MFs of ABC Ltd. A rise in stock market will result in a return of +5% ,while a fall will entail a return of -3%.Option C: Invest in MFs of XYZ Ltd. A rise in stock market will result in a return of -2.5%, while a fall enail a return of +2%.
A) The max. guaranteed return she can get is:
i) 0.25%
ii) 0.10%
iii) 0.20%
iv) 0.30%
B) What strategy will maximize the guaranteed return ro Shabnam?
i) 100% in option A.
ii) 36% in option B and 64% in option C.
iii) 64% in option B and 36% in optin C
iv) 1/3 in each of the three options
v) 30% in option A,32% in option B and 38% in option C.
what is the remainder when (754)^711 is divided by 100
a) 64
b) 24
c) 44
d) 4
In the year 2011, a survey was conducted in Mohamadgunj for three major languages – Hindi, Santhali and
Urdu. The total population of Mohamadgunj was 5140 in 2011, out of which 2640 people used to speak
Hindi and 1020 people used to speak both Hindi and Santhali. The number of people who used to speak
Santhali was 360 more than the number of people who used to speak Urdu. The number of people who
used to speak all the three languages was 270.
22. What could be the maximum number of people who did not speak any of the three languages
mentioned above?
(a) 2890 (b) 2500 (c) 2110 (d) None of these
23. If the number of people who used to speak only Hindi was more than the number of people who used
to speak only Urdu, then what could be the maximum number of people who used to speak only
Santhali?
(a) 1580 (b) 1230 (c) 1581 (d) 1229
The winning relay team in a high school sports competition clocked 4-8 minutes for a distance of 13.2 km. Its runners A, B, C and D maintained speeds of 15 kmph, 16 kmph, 17 kmph and 18 kmph respectively. What is theratio of the time taken by B to that taken by D?
a. 5 : 16
b. 5 : 17
c. 9 : 8
d. 8 : 9
If f(x) = max (x2 – 4, x, –1), then what is the minimum value of f(x)?
(a) – 4 (b)
1 17
2
−
c) –1 d) 0
Two-fifths of the voters promise to vote for P and the rest promise to vote for Q. Of these, on the last day, 15% of the voters went back on their promise to vote for P and 25% of voters went back of their promise to vote for Q, and P lost by 2 votes. Then total number of voters is:
a. 100
b. 110
c. 90
d. 95
ram has sne choc boxes to sell.he sells dem either as full boxes or half boxes. 1st cust buys half a box more dan half of the boxes wit ram. 2nd cust buys half a box mor dan half of the remaining boxes wt him. ram sells in this manner to 8 other cust.he s lft wt no boxes to sell aft dat. hw mny choc boxes did ramu hve in the begining..??
options are 511,513,1023,1025...
2(log to the base 3)x - log(x)^2 + log(x+1) when simplified equals to W. W=?
a. 3(x-1)/2x
b. 1+7x-x^2
c. 9(x+1)/x^2
d. 9/(x+1)
In triangle ABC, D, E, F and G are the midpoints of the sides BC, AD, BE and FD respectively. What is the ratio of the area of EGD to that of AEC
(a) 1 : 16 (b) 1 : 4 (c) 4 : 1 (d) 16 : 1
If a rook and a bishop of a standard chess set are randomly placed on a chessboard, what is the probability that one is attacking the other?
Note that both are different colored pieces.
Ans: 13/36
In how many classes did more than 10% students fail in 2009-10?
2,3,4,5
What was the absolute difference between the total number of students who passed in the five classes together in 2008-09 and that in 2010-11?
77 78 79 None(1+x^2)(1+x^4)(1+x^6)...(1+x^16) coff of x^12 !!!
In how many ways letters of the word NINETEEN can be arranged such that
a) neither all the vowels nor all the consonants are together?
b) all the vowels and all the consonants are not together?
PS: dnt have the answer. please share your approach
Five balls of different colours are to be placed in three boxes of different
sizes. Each box can hold all five balls. The number of ways in which we can
place the balls in the boxes so that no box remains empty is
(a) 132 (b) 155 (c) 143 (d) 150