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Recent questions tagged sec-a
Questions
Find the principal values of the following: $sec^{-1} \bigg( \frac {2} {\sqrt 3} \bigg) $
cbse
class12
bookproblem
ch2
sec1
q7
p42
sec-a
math
asked
Nov 28, 2012
by
vaishali.a
2
answers
Find the principal values of the following: $tan^{-1} (-1)$
cbse
class12
bookproblem
ch2
sec1
q6
p41
sec-a
math
asked
Nov 28, 2012
by
vaishali.a
2
answers
Find the principal values of the following: $cos^{-1} \bigg(-\frac {1} {2} \bigg ) $
cbse
class12
bookproblem
ch2
sec1
q5
p41
easy
sec-a
math
asked
Nov 28, 2012
by
vaishali.a
2
answers
Find the principal values of the following: <br>$ tan^{-1} (-\sqrt3)$
cbse
class12
bookproblem
ch2
sec1
q4
p41
easy
sec-a
math
asked
Nov 28, 2012
by
vaishali.a
2
answers
Find the principal values of the following: $cosec^{-1} (2) $
cbse
class12
bookproblem
ch2
sec1
q3
p41
easy
sec-a
math
asked
Nov 28, 2012
by
vaishali.a
1
answer
Find the principal values of the following: <br> $cos^{-1} \bigg(\large\frac { \sqrt 3} {2}\bigg)$
cbse
class12
bookproblem
ch2
sec1
q2
p41
easy
sec-a
math
asked
Nov 28, 2012
by
vaishali.a
2
answers
Find the principal values of the following: <br> $ sin^{-1} \bigg( -\frac {1} {2}\bigg) $
cbse
class12
bookproblem
ch2
sec1
q1
p41
easy
sec-a
math
asked
Nov 28, 2012
by
vaishali.a
2
answers
Determine order and degree (if defined) of differential equation$\bigg(\large\frac{d^2y}{dx^2}\bigg)^2+\normalsize \cos\bigg(\large\frac{dy}{dx}\bigg)=0$
cbse
class12
bookproblem
ch9
sec1
q4
p382
easy
math
sec-a
asked
Nov 28, 2012
by
sreemathi.v
1
answer
Determine order and degree (if defined) of differential equation $\frac{d^2y}{dx^2}=\cos3x+\sin3x$
cbse
class12
bookproblem
ch9
sec1
q5
p382
easy
math
sec-a
asked
Nov 28, 2012
by
sreemathi.v
1
answer
Determine order and degree (if defined) of differential equation $\bigg(\frac{ds}{dt}\bigg)^4 +3s\frac{d^2s}{dt^2}=0$
cbse
class12
bookproblem
ch9
sec1
q3
p382
easy
math
sec-a
asked
Nov 28, 2012
by
sreemathi.v
1
answer
Determine order and degree (if defined) of differential equation $\frac{d^4y}{dx^4}+\sin(y''')=0$
cbse
class12
bookproblem
ch9
sec1
q1
p382
easy
math
sec-a
asked
Nov 28, 2012
by
sreemathi.v
1
answer
Choose the correct answer in the normal at the point \((1,1)\) on the curve \(2y + x^2 = 3\) is
cbse
class12
bookproblem
ch6
misc
q22
p244
sec-a
medium
math
asked
Nov 28, 2012
by
thanvigandhi_1
1
answer
Choose the correct answer in a cylindrical tank of radius 10 m is being filled with wheat at the rate of 314 cubic metre per hour. Then the depth of the wheat is increasing at the rate of
cbse
class12
bookproblem
ch6
misc
q19
p243
sec-a
medium
math
asked
Nov 28, 2012
by
thanvigandhi_1
1
answer
Find the equation of the normal to curve \(y^2 = 4x\) which passes through the point \((1, 2).\)
cbse
class12
bookproblem
ch6
misc
q4
p242
sec-a
easy
math
asked
Nov 28, 2012
by
thanvigandhi_1
1
answer
Using differentials, find the approximate value of each of the following: $(33)^{-\large\frac{1}{5}}$
cbse
class12
bookproblem
ch6
misc
q1b
p242
sec-a
easy
math
asked
Nov 28, 2012
by
thanvigandhi_1
1
answer
Determine order and degree (if defined) of differential equation $y'+5y=0$
cbse
class12
bookproblem
ch9
sec1
q2
p382
easy
short-answer
math
sec-a
asked
Nov 28, 2012
by
sreemathi.v
1
answer
Determine order and degree (if defined) of differential equation $(y''')^2+(y'')^3+(y')^4+y^5=0$
cbse
class12
bookproblem
ch9
sec1
q6
p382
easy
math
sec-a
asked
Nov 27, 2012
by
sreemathi.v
1
answer
Determine order and degree (if defined) of differential equation $y'''+2y''+y'=0$
cbse
class12
bookproblem
ch9
sec1
q7
p382
easy
short-answer
sec-a
math
asked
Nov 27, 2012
by
sreemathi.v
1
answer
The maximum value of $ [ x(x-1) +1]^{\frac{1}{3}}, 0 \leq \: x \leq$ is
cbse
class12
bookproblem
ch6
sec5
q29
p234
sec-a
easy
math
asked
Nov 27, 2012
by
thanvigandhi_1
1
answer
Number of binary operations on the set $\{a, b\}$ are
cbse
class12
bookproblem
ch1
misc
q19
p31
sec-a
math
asked
Nov 27, 2012
by
vaishali.a
1
answer
Let $A = \{1, 2, 3\}$. Then number of equivalence relations containing $(1, 2)$ is
cbse
class12
bookproblem
ch1
misc
q17
p30
sec-a
math
asked
Nov 27, 2012
by
vaishali.a
1
answer
Let $ A = \{1, 2, 3\}$. Then number of relations containing $(1, 2)\;$ and $\;(1, 3)$ which are reflexive and symmetric but not transitive is
cbse
class12
bookproblem
ch1
misc
q16
p30
sec-a
math
asked
Nov 27, 2012
by
vaishali.a
1
answer
If A and B are any two events such that \(P(A) + P(B) - P(A \text{and} B) = P(A)\), then choose the correct answer:
cbse
class12
bookproblem
ch13
misc
p584
q19
sec-a
easy
math
asked
Nov 27, 2012
by
balaji.thirumalai
1
answer
If P(A|B) > P(A), then which of the following is correct ?
cbse
class12
bookproblem
ch13
misc
p584
q18
sec-a
easy
math
asked
Nov 27, 2012
by
balaji.thirumalai
1
answer
If A and B are two events such that P(A) $\neq$ 0 and P(B | A) = 1 . Then choose the correct answer.
cbse
class12
bookproblem
ch13
misc
p584
q17
sec-a
easy
math
asked
Nov 27, 2012
by
balaji.thirumalai
1
answer
An electronic assembly consists of two subsystems, say, A and B. From previous testing procedures, the following probabilities are assumed to be known: $ \text {P(A fails) = 0.2 P(B fails alone) = 0.15 P(A and B fail) = 0.15}$. Evaluate the following probabilities \[ \text {(i) P(A fails | B has failed) (ii) P(A fails alone)} \]
cbse
class12
bookproblem
ch13
misc
p584
q15
sec-a
easy
math
asked
Nov 27, 2012
by
balaji.thirumalai
1
answer
If each element of a second order determinant is either zero or one, what is the probability that the value of the determinant is positive? (Assume that the individual entries of the determinant are chosen independently, each value being assumed with probability \(\frac{1}{2}\)).
cbse
class12
bookproblem
ch13
misc
p584
q14
sec-a
easy
math
asked
Nov 27, 2012
by
balaji.thirumalai
1
answer
If a leap year is selected at random, what is the chance that it will contain 53 tuesdays?
cbse
class12
bookproblem
ch13
misc
p583
q8
sec-a
easy
math
asked
Nov 27, 2012
by
balaji.thirumalai
1
answer
A and B are two events such that P (A) $\neq$ 0. Find P(B|A), if (i) A is a subset of B (ii) A $\cap$ B = $\phi$
cbse
class12
bookproblem
ch13
misc
p582
q1
easy
sec-a
math
asked
Nov 27, 2012
by
balaji.thirumalai
1
answer
Find the probability of getting 5 exactly twice in 7 throws of a die.
cbse
class12
bookproblem
ch13
sec5
p578
q11
sec-a
easy
math
asked
Nov 27, 2012
by
balaji.thirumalai
1
answer
In an examination, 20 questions of true-false type are asked. Suppose a student tosses a fair coin to determine his answer to each question. If the coin falls heads, he answers TRUE; if it falls tails, he answers FALSE. Find the probability that he answers at least 12 questions correctly.
cbse
class12
bookproblem
ch13
sec5
p577
q7
sec-a
difficult
math
asked
Nov 27, 2012
by
balaji.thirumalai
1
answer
A bag consists of 10 balls each marked with one of the digits 0 to 9. If four balls are drawn successively with replacement from the bag, what is the probability that none is marked with the digit 0?
cbse
class12
bookproblem
ch13
sec5
p577
q6
sec-a
easy
math
asked
Nov 27, 2012
by
balaji.thirumalai
1
answer
Suppose that two cards are drawn at random from a deck of cards. Let X be the number of aces obtained. Then the value of E(X) is ?
cbse
class12
bookproblem
ch13
sec4
p571
q17
sec-a
medium
math
asked
Nov 27, 2012
by
balaji.thirumalai
1
answer
The mean of the numbers obtained on throwing a die having written 1 on three faces, 2 on two faces and 5 on one face is
cbse
class12
bookproblem
ch13
sec4
p571
q16
sec-a
easy
math
asked
Nov 27, 2012
by
balaji.thirumalai
1
answer
Let X represent the difference between the number of heads and the number of tails obtained when a coin is tossed 6 times. What are possible values of X?
cbse
class12
bookproblem
ch13
sec4
p570
q3
sec-a
concepts
easy
math
asked
Nov 27, 2012
by
balaji.thirumalai
1
answer
An urn contains 5 red and 2 black balls. Two balls are randomly drawn. Let X represent the number of black balls. What are the possible values of X? Is X a random variable ?
cbse
class12
bookproblem
ch13
sec4
p570
q2
sec-a
easy
math
asked
Nov 27, 2012
by
balaji.thirumalai
1
answer
State which of the following is a probability distributions of a random variable. Give reasons for your answer.
cbse
class12
bookproblem
ch13
sec4
p569
q1
sec-a
easy
math
asked
Nov 27, 2012
by
balaji.thirumalai
1
answer
If A and B are two events such that \(A ⊂ B\) and \(P(B) ≠ 0\), then which of the following is correct?
cbse
class12
bookproblem
ch13
sec3
p557
q14
concepts
sec-a
math
asked
Nov 27, 2012
by
balaji.thirumalai
1
answer
Probability that A speaks truth is $\large \frac{4}{5} $ . A coin is tossed. A reports that a head appears. The probability that actually there was head is?
cbse
class12
bookproblem
ch13
sec3
p557
q13
easy
sec-a
math
asked
Nov 27, 2012
by
balaji.thirumalai
1
answer
Two events A and B will be independent, if which of the following is true?
cbse
class12
bookproblem
ch13
sec2
p548
q18
easy
concepts
sec-a
math
asked
Nov 27, 2012
by
balaji.thirumalai
1
answer
Choose the correct answer: The probability of obtaining an even prime number on each die, when a pair of dice is rolled is
cbse
class12
bookproblem
ch13
sec2
p548
q17
sec-a
easy
math
asked
Nov 27, 2012
by
balaji.thirumalai
1
answer
One card is drawn at random from a well shuffled deck of 52 cards. Are E and F independant if: E : the card drawn is a spade F : the card drawn is an ace
cbse
class12
bookproblem
ch13
sec2
p547
q15
q15-1
sec-a
easy
math
asked
Nov 27, 2012
by
balaji.thirumalai
1
answer
Probability of solving specific problem independently by A and B are $\large \frac{1}{2} $ and $\large \frac{1}{3} $ respectively. If both try to solve the problem independently, find the probability that $ \text {(i) the problem is solved (ii) exactly one of them solves the problem.} $
cbse
class12
bookproblem
ch13
sec2
p547
q14
easy
sec-a
math
asked
Nov 27, 2012
by
balaji.thirumalai
1
answer
Two balls are drawn at random with replacement from a box containing 10 black and 8 red balls. Find the probability that (i) both balls are red. (ii) first ball is black and second is red. (iii) one of them is black and other is red.
cbse
class12
bookproblem
ch13
sec2
p546
q13
sec-a
easy
math
asked
Nov 27, 2012
by
balaji.thirumalai
1
answer
A die is tossed thrice. Find the probability of getting an odd number at least once.
cbse
class12
bookproblem
ch13
sec2
p546
q12
sec-a
easy
math
asked
Nov 27, 2012
by
balaji.thirumalai
1
answer
Given two independent events A and B such that P(A) = 0.3, P(B) = 0.6. Find (i) P(A and B) (ii) P(A and not B) (iii) P(A or B) (iv) P(neither A nor B)
cbse
class12
bookproblem
ch13
sec2
p546
q11
sec-a
easy
math
asked
Nov 27, 2012
by
balaji.thirumalai
1
answer
Events A and B are such that $P (A) = \frac{1}{2} , P(B) = \frac{7}{12}$ and P(not A or not B) = $ \frac{1}{4} $ . State whether A and B are independent?
cbse
class12
bookproblem
ch13
sec2
p546
q10
sec-a
easy
math
asked
Nov 27, 2012
by
balaji.thirumalai
1
answer
Find two positive numbers whose sum is 16 and the sum of whose cubes is minimum.
cbse
class12
bookproblem
ch6
sec5
q16
p233
sec-a
easy
math
asked
Nov 27, 2012
by
thanvigandhi_1
1
answer
If A and B are two events such that $P (A) = \large \frac{1}{4} , P (B) = \large\frac{1}{2} $ and $P(A \cap B) = \large \frac{1}{8} $ , find $P$ (not A and not B).
cbse
class12
bookproblem
ch13
sec2
p546
q9
sec-a
easy
math
asked
Nov 27, 2012
by
balaji.thirumalai
1
answer
Let A and B be independent events with P (A) = 0.3 and P(B) = 0.4. Find (i) P(A $\cap$ B) (ii) P(A $\cup$ B) (iii) P ($\large\frac{A}{B}$) (iv) P ($\large\frac{B}{A}$)
cbse
class12
bookproblem
ch13
sec2
p546
q8
sec-a
easy
math
asked
Nov 27, 2012
by
balaji.thirumalai
1
answer
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