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if there are six periods in each working day of school. in hw many ways can one set up time table such that each subject is allowed atleast one period?
Read Solution (Total 5)
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- How Could yu people guess number of subjects???
- 12 years agoHelpfull: Yes(6) No(0)
- there are 6 periods so total ways = 6!=720
the 5 periods are distinct and the remaining 6th can be any of 5.
so no of ways=720*5=3600 - 12 years agoHelpfull: Yes(4) No(2)
- if there are 6 distinct subjects:
then simple answer=6!.
if there are 5 periods then
6c1.5c1+5c1.4c1+4c1.3c1+3c1.2c1+2c1.1c1+1c1.5c1
(select a period).(select subject)
is it correct?
- 12 years agoHelpfull: Yes(0) No(2)
- @ Navneet,
You have used formulae for combination. But this is an example of arrangement i.e. permutation. - 12 years agoHelpfull: Yes(0) No(0)
- @navneet, answer is 3600. as explained by vaishnav
- 12 years agoHelpfull: Yes(0) No(0)
TCS Other Question
what is the remainder when 6^17+117^6 is divided by 7?
TCS QUESTIONS
1) Raj writes a number .He sees that the number of two digits exceeds four times the sum of its digits by 3.if the number is increased by 18,the result is same as the number formed by reversing the digits .Find the number
a)35 b)42 c)49 d)57
2) a,b,c are non negative integers such that 28a+30b+31c=365.then a+b+c is
a)11 b)12 c)24 d)21
3)George can do some work in 8 hours.paul can do same work in 10 hours while hari can do the same work in 12 hours.all the three of them start working at 9 a.m while George stops work at 11 a.m and the remaining two complete the work approximately at what time will the work be finished?
a)11.30 a.m b)12 noon c)12.30pm d)1pm
4)If x^y denotes x raised to the power y,find last two digits of(1941^3843)+(1961^4181)
a)02 b)82 c)42 d)22
5.Jake can dig a well in 16 days.Paul can dig the same well in 24 days.Jake,Paul and Hari together dig the well in 8 days.Hari alone can dig the well in?
a)32 days b)48 days c)96 days d)24 days
6.If a lemon and an apple together costs Rs.12.00.A tomato and a lemon cost Rs.4.00 and an apple cost Rs.8.00.more than a tomato (or) a lemon,then which of the following can be the price of a lemon?
a)Rs.2 b)Rs.4 c)Rs.1 d)Rs.3
7.3 mangoes and 4 apples cost Rs.85. 5 apples and 6 peaches cost Rs.122. 6 mangoes and 2 peaches cost Rs.114. what is the combined price 1 apple,1 mangoes ,1 peach?
a) 37 b)39 c)35 d)36
8.An organization has 3 committees. only 2 person are the member of all 3 committees but every pair of committess has 3 members in common.what is the LEAST possible number of members of an any one committe?
a)4 b)5 c)6 d)7
9.There are 5 sweets-jamun,kulti,peda,laddu and jilabi that i wish to eat on 5 consecutive days –Monday through Friday following imposed constraints.
1.Laddu is not eaten on Monday
2.If jamun is eaten on Monday,then laddu must be eaten on Friday
3.If laddu is eaten on Tuesday ,kulti should be eaten on Monday
4.peda is eaten on followed by jilabi
Peda is eaten except a day?
a)Tuesday b)Monday c)Wednesday d)Friday
10.If YWUSQ IS 25-23-21-19-17,then MKIGF IS ?
a)13-11-9-7-6 b)1-2-3-5-7 c)9-8-7-6-5 d)7-8-4-5-3
11) 641+852+973=2456 what is the largest digit that can be changed to make the addition correct?
a)5 b)6 c)4 d)7
12)The value of scooter depreciates in such a way that its value at the end of each year is ¾ of its value at the beginning of the same year.if the intial value of the scooter is RS 40,000.what is its value at the end of the 3rd year?
a)RS 23125 b)RS 19000 c)13435 d)16875
13)when numbers are written in base b, we have 12*25=333 The value of b is?
a)8 b)6 c)none d)7
14)At the end of 1994 Rohit was half as old as his grandmother.The sum of the years in which they were born is 3844. How old rohit was at the end of 1999?
a)48 b)55 c)49 d)53
15)p(x)=((x^2012)+(x^2011)+(x^2010)+…………..+x+1)^2-x^2012
Q(x)=((x^2011)+(x^2010)+……………………+x+1).The remainder when p(x) is divided by Q(X) is
a)1 b)0 c)x+1 d)x-1
16. A^B Means A raised to the power B. If x*y*Z0
ii.Z