Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ π -¹ ² ³ °

You are not logged in.

- Topics: Active | Unanswered

**anonimnystefy****Real Member**- From: The Foundation
- Registered: 2011-05-23
- Posts: 14,813

Hi ganesh

Here lies the reader who will never open this book. He is forever dead.

Taking a new step, uttering a new word, is what people fear most. ― Fyodor Dostoyevsky, Crime and Punishment

Offline

**ganesh****Moderator**- Registered: 2005-06-28
- Posts: 12,926

Hi bobbym and anonimnystefy,

The answers 19 and 20 are correct. Well done!

21. The Standard Deviation of a set of 10 numbers is 5. When each number is added by 7, the new Standard Deviation is ______________.

(a) 12

(b) 7

(c) 5

(d) None of these.

22. The probability of getting a black card from a pack of cards is ______________.

(a) 1/13

(b) 2/13

(c) 1/4

(d) 1/2

Character is who you are when no one is looking.

Offline

**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 81,485

Hi;

**In mathematics, you don't understand things. You just get used to them.I have the result, but I do not yet know how to get it.All physicists, and a good many quite respectable mathematicians are contemptuous about proof.**

Offline

**anonimnystefy****Real Member**- From: The Foundation
- Registered: 2011-05-23
- Posts: 14,813

Hi ganesh

Here lies the reader who will never open this book. He is forever dead.

Taking a new step, uttering a new word, is what people fear most. ― Fyodor Dostoyevsky, Crime and Punishment

Offline

**ganesh****Moderator**- Registered: 2005-06-28
- Posts: 12,926

Hi bobbym and anonimnystefy,

Both the answers are correct, bobbym! Well done!

anonimnystefy : The answers

and23. The common ratio 'r' in the Geometric Progression 9, 3, 1, ........ is _______________

(a) 3

(b) 1/3

(c) 1

(d) 9

24. The value of

is(a)

(b)

(c)

(d) None of these

Character is who you are when no one is looking.

Offline

**anonimnystefy****Real Member**- From: The Foundation
- Registered: 2011-05-23
- Posts: 14,813

Hi ganesh

Question #22 wasn't precise.

Here lies the reader who will never open this book. He is forever dead.

Taking a new step, uttering a new word, is what people fear most. ― Fyodor Dostoyevsky, Crime and Punishment

Offline

**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 81,485

Hi ganesh;

**In mathematics, you don't understand things. You just get used to them.I have the result, but I do not yet know how to get it.All physicists, and a good many quite respectable mathematicians are contemptuous about proof.**

Offline

**ganesh****Moderator**- Registered: 2005-06-28
- Posts: 12,926

Hi anonimnystefy and bobbym,

Both the answers are correct. Well done!

25. Volume of hemisphere with radius 4 centimeters (in cubic centimeters) is ___________________

(a)

(b)

(c)

(d) None of these

26. When

is divided by x - 2, the remainder is 20 then the value of m is __________________(a) 4

(b) -4

(c) 3

(d) 2

Character is who you are when no one is looking.

Offline

**anonimnystefy****Real Member**- From: The Foundation
- Registered: 2011-05-23
- Posts: 14,813

Hi ganesh

Here lies the reader who will never open this book. He is forever dead.

Offline

**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 81,485

Hi ganesh;

**In mathematics, you don't understand things. You just get used to them.I have the result, but I do not yet know how to get it.All physicists, and a good many quite respectable mathematicians are contemptuous about proof.**

Offline

**ganesh****Moderator**- Registered: 2005-06-28
- Posts: 12,926

Hi anonimnystefy and bobbym,

The answers 25 and 2 are correct. Well done!

27. The roots of the equation x[sup]2[/sup] - x - 6 = 0 are __________________

(a) 3,2

(b) 3,-2

(c} -3,2

(d) -3,-2

28. Which of the following is a point on 3x + 4y ≤ 7?

(a) (1,1)

(b) (1,2)

(c) (2,1)

(d) (0,2)

Character is who you are when no one is looking.

Offline

**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 81,485

Hi ganesh;

I have the result, but I do not yet know how to get it.

All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

Offline

**anonimnystefy****Real Member**- From: The Foundation
- Registered: 2011-05-23
- Posts: 14,813

Hi ganesh

Here lies the reader who will never open this book. He is forever dead.

Offline

**ganesh****Moderator**- Registered: 2005-06-28
- Posts: 12,926

Hi bobbym and anonimnystefy,

The answers 27 and 28 are correct. Well done!

29. The points of intersection of the lines x = 3 and y = 4 is _________________

(a) (3,0)

(b) (4,0)

(c) (0,0)

(d) (3,4)

30. The equation y = c represents a _________________

(a) x axis

(b) y axis

(c) a line parallel to x axis

(d) a line parallel to y axis

Character is who you are when no one is looking.

Offline

**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 81,485

Hi;

I have the result, but I do not yet know how to get it.

All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

Offline

**anonimnystefy****Real Member**- From: The Foundation
- Registered: 2011-05-23
- Posts: 14,813

Hi ganesh

Here lies the reader who will never open this book. He is forever dead.

Offline

**ganesh****Moderator**- Registered: 2005-06-28
- Posts: 12,926

Hi bobbym and anonimnystefy,

bobbym : Well done!

anonimnystefy :

31. P(E) + P(E') = ____________

(a) 0

(b) 1

(c) 2

(d) None of these

32. When A and B are mutually exclusive,

= ______________(a) P (A)

(b) P (B)

(c) P (A) + P (B)

(d)

Character is who you are when no one is looking.

Offline

**anonimnystefy****Real Member**- From: The Foundation
- Registered: 2011-05-23
- Posts: 14,813

Hi ganesh

Yes it was. I don't know how that happened.

Here lies the reader who will never open this book. He is forever dead.

Offline

**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 81,485

Hi ganesh;

I have the result, but I do not yet know how to get it.

All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

Offline

**ganesh****Moderator**- Registered: 2005-06-28
- Posts: 12,926

Hi anonimnystefy and bobbym,

The answers 31 and 32 are correct. Well done!

33. If

= , then = ________________(a) 1

(b) 0

(c)

(d)

*Last edited by ganesh (2012-06-25 18:12:57)*

Character is who you are when no one is looking.

Offline

**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 81,485

Hi ganesh;

I have the result, but I do not yet know how to get it.

All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

Offline

**anonimnystefy****Real Member**- From: The Foundation
- Registered: 2011-05-23
- Posts: 14,813

Hi ganesh

You gave me so much trouble with this one. I though you had written theta=cos(theta).

Here lies the reader who will never open this book. He is forever dead.

Offline

**ganesh****Moderator**- Registered: 2005-06-28
- Posts: 12,926

Hi bobbym and anonimnystefy,

The answer 33 is correct. Well done!

(Sorry for the trouble, anonimnystefy)

34.

is(a)

(b)

(c)

(d)

Character is who you are when no one is looking.

Offline

**ganesh****Moderator**- Registered: 2005-06-28
- Posts: 12,926

35. The Common Difference in the Arithmetic Progression 5, 2, -1, ..... is _______________.

(a) 3

(b) -3

(c) 2

(d) -2

36.

___________________(a)

(b)

(c)

(d) None of these

Character is who you are when no one is looking.

Offline

**anonimnystefy****Real Member**- From: The Foundation
- Registered: 2011-05-23
- Posts: 14,813

Hi ganesh

Here lies the reader who will never open this book. He is forever dead.

Offline