Ask Questions, Get Answers
Menu
X
JEEMAIN Crash Practice
15 Test Series
NEET Crash Practice
5 Test Series
CBSE XII
Math
JEEMAIN
Math
Physics
Chemistry
Practice Test Series
CBSE XI
Math
NEET
Physics
Chemistry
Biology - XII
Biology - XI
Olympiad class V
Math - 5 Test Series
Olympiad class VI
Math - 5 Test Series
studyplans
JEEMAIN Crash Practice
15 Test Series
NEET Crash Practice
5 Test Series
CBSE XII
Math
JEEMAIN
Math
Physics
Chemistry
Practice Test Series
CBSE XI
Math
NEET
Physics
Chemistry
Biology - XII
Biology - XI
Olympiad class V
Math - 5 Test Series
Olympiad class VI
Math - 5 Test Series
mobile
exams
ask
sample papers
tutors
pricing
sign-in
Download our FREE mobile app with 1000+ tests for CBSE, JEE MAIN, NEET
X
Search
Topics
Want to ask us a question?
Click here
Browse Questions
Student Questions
Ad
Home
>>
EAMCET
>>
Mathematics
0
votes
A binary sequence is an array of $0's $ and $1's$. The number of n-digit binary sequences which contain even number of $0's$ is:
\[\begin {array} {1 1} (1)\;2^{n-1} & \quad (2)\;2^n-1 \\ (3)\;2^{n-1}-1 & \quad (4)\;2^n \end {array}\]
jeemain
eamcet
math
2009
q6
Share
asked
Oct 8, 2013
by
meena.p
Please
log in
or
register
to add a comment.
Can you answer this question?
Do not ask me again to answer questions
Please
log in
or
register
to answer this question.
1 Answer
0
votes
$(2)\;2^n-1$
answered
Nov 7, 2013
by
pady_1
Please
log in
or
register
to add a comment.
Related questions
0
votes
1
answer
A binary sequence is an array of 0's and 1's. The number of n-digit binary sequences which contain even number of 0's is :
asked
Oct 8, 2013
by
meena.p
jeemain
eamcet
math
2009
q6
0
votes
1
answer
Binary sequencebinary sequence is an array of 0's and 1's. what is the number of n-digit binary sequences which contain even number of 0's?
asked
Nov 21, 2015
by
vmr732002
0
votes
0
answers
Two cylinders 'A'and 'B' fitted with pistons contain equal number of moles of an ideal mono-atomic gas at $400\;K$. The piston of 'A' is free to move while that of 'B' is held fixed. Same amount of heat energy is given to the gas in each cylinder. If the rise in temperature of the gas in 'B' is :
asked
Oct 11, 2013
by
meena.p
jeemain
eamcet
physics
2009
q96
0
votes
0
answers
Let f : N \( \rightarrow \) N be defined by : $ f(n) = \left\{ \begin{array}{l l} \large\frac{n+1}{2} & \quad \text{if $n$ is odd}\\ \large\frac{n}{2} & \quad \text{ if $n$ is even} \end{array} for \: all\: n\: \in \: N. \right.$ Find whether the function f is bijective.
asked
Dec 21, 2012
by
thanvigandhi_1
cbse
class12
modelpaper
2009
sec-b
q13
math
0
votes
1
answer
If $n$ is an integer which leaves remainder one when divided by three, then $(1+\sqrt {3}i)^n+(1-\sqrt {3}i)^n=$
asked
Oct 9, 2013
by
meena.p
jeemain
eamcet
math
2009
q21
0
votes
2
answers
Let \(\ast\) be the binary operation on \(N\) given by \(a\ast b=L.C.M\,.of\,a\,and\,b\). Find $\begin{array}{1 1}(i)\;\; 5 \ast7,\; 20 \ast 16 & (ii)\;\; Is\; \ast \;commutative?\\(iii)\;\; Is\; \ast \;associative? & (iv)\;\; Find\, the\,identity \, of \ast \, in N\\(v)\;\; Which \, elements\, of \, N\, are\, invertible\, for\, the\, operaation\,\ast ? & \;\end{array}$
asked
Nov 21, 2012
by
vaishali.a
cbse
class12
bookproblem
ch1
sec4
q6
p25
sec-b
math
0
votes
1
answer
If $f:R \to R$ is defined by $f(x) = \left\{ \begin{array}{l l} \frac{2 sin x-\sin 2x}{2x \cos x}, & \quad if \;x \neq 0 \\ a, & \quad if \; x =0 \end{array} \right. $ then the value of $a$ so that f is continuous at 0 is :
asked
Oct 10, 2013
by
meena.p
jeemain
eamcet
math
2009
q64
Ask Question
SUBMIT QUESTION
►
Please Wait
Take Test
JEEMAIN Crash Practice
15 Test Series
NEET Crash Practice
5 Test Series
JEEMAIN
350+ TESTS
NEET
320+ TESTS
CBSE XI MATH
50+ TESTS
CBSE XII MATH
80+ TESTS
x
JEE MAIN, CBSE, NEET Mobile and Tablet App
The ultimate mobile app to help you crack your examinations
Get the Android App
...