How can I Find the size of each of the following sets [closed]

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I got this question for homework and can't solve it please help

Find the size of the following sets

1.{x|x∈Z and x^2=8}.



2.P(A), where A=P({1,2}).



3.{1,10,100,1000,…}.



4.S×T, where S={a,b,c} and T={1,2,3,4,5}.



5.{x|x∈Z and x^2<8}.

edited Nov 21 at 15:52

asked Nov 21 at 8:20

mmhh123

closed as off-topic by amWhy, NCh, Martin Sleziak, José Carlos Santos, Paul Frost Dec 1 at 0:04

This question appears to be off-topic. The users who voted to close gave this specific reason:

"This question is missing context or other details: Please improve the question by providing additional context, which ideally includes your thoughts on the problem and any attempts you have made to solve it. This information helps others identify where you have difficulties and helps them write answers appropriate to your experience level." – amWhy, NCh, José Carlos Santos, Paul Frost

If this question can be reworded to fit the rules in the help center, please edit the question.

2

Welcome to MSE. It will be more likely that you will get an answer if you show us that you made an effort. This should be added to the question rather than in the comments.
– José Carlos Santos
Nov 21 at 8:26

1

What does the "fallen T" mean?
– Christian Blatter
Nov 21 at 10:34

What you mean by fallen T?
– mmhh123
Nov 21 at 15:42

add a comment |

up vote
-2
down vote

favorite

I got this question for homework and can't solve it please help

Find the size of the following sets

1.{x|x∈Z and x^2=8}.



2.P(A), where A=P({1,2}).



3.{1,10,100,1000,…}.



4.S×T, where S={a,b,c} and T={1,2,3,4,5}.



5.{x|x∈Z and x^2<8}.

edited Nov 21 at 15:52

asked Nov 21 at 8:20

mmhh123

closed as off-topic by amWhy, NCh, Martin Sleziak, José Carlos Santos, Paul Frost Dec 1 at 0:04

This question appears to be off-topic. The users who voted to close gave this specific reason:

"This question is missing context or other details: Please improve the question by providing additional context, which ideally includes your thoughts on the problem and any attempts you have made to solve it. This information helps others identify where you have difficulties and helps them write answers appropriate to your experience level." – amWhy, NCh, José Carlos Santos, Paul Frost

If this question can be reworded to fit the rules in the help center, please edit the question.

2

Welcome to MSE. It will be more likely that you will get an answer if you show us that you made an effort. This should be added to the question rather than in the comments.
– José Carlos Santos
Nov 21 at 8:26

1

What does the "fallen T" mean?
– Christian Blatter
Nov 21 at 10:34

What you mean by fallen T?
– mmhh123
Nov 21 at 15:42

add a comment |

up vote
-2
down vote

favorite

I got this question for homework and can't solve it please help

Find the size of the following sets

1.{x|x∈Z and x^2=8}.



2.P(A), where A=P({1,2}).



3.{1,10,100,1000,…}.



4.S×T, where S={a,b,c} and T={1,2,3,4,5}.



5.{x|x∈Z and x^2<8}.

edited Nov 21 at 15:52

asked Nov 21 at 8:20

mmhh123

I got this question for homework and can't solve it please help

Find the size of the following sets

1.{x|x∈Z and x^2=8}.



2.P(A), where A=P({1,2}).



3.{1,10,100,1000,…}.



4.S×T, where S={a,b,c} and T={1,2,3,4,5}.



5.{x|x∈Z and x^2<8}.

discrete-mathematics

edited Nov 21 at 15:52

asked Nov 21 at 8:20

mmhh123

edited Nov 21 at 15:52

asked Nov 21 at 8:20

mmhh123

edited Nov 21 at 15:52

asked Nov 21 at 8:20

mmhh123

asked Nov 21 at 8:20

mmhh123

asked Nov 21 at 8:20

mmhh123

closed as off-topic by amWhy, NCh, Martin Sleziak, José Carlos Santos, Paul Frost Dec 1 at 0:04

This question appears to be off-topic. The users who voted to close gave this specific reason:

"This question is missing context or other details: Please improve the question by providing additional context, which ideally includes your thoughts on the problem and any attempts you have made to solve it. This information helps others identify where you have difficulties and helps them write answers appropriate to your experience level." – amWhy, NCh, José Carlos Santos, Paul Frost

If this question can be reworded to fit the rules in the help center, please edit the question.

closed as off-topic by amWhy, NCh, Martin Sleziak, José Carlos Santos, Paul Frost Dec 1 at 0:04

This question appears to be off-topic. The users who voted to close gave this specific reason:

"This question is missing context or other details: Please improve the question by providing additional context, which ideally includes your thoughts on the problem and any attempts you have made to solve it. This information helps others identify where you have difficulties and helps them write answers appropriate to your experience level." – amWhy, NCh, José Carlos Santos, Paul Frost

If this question can be reworded to fit the rules in the help center, please edit the question.

2

Welcome to MSE. It will be more likely that you will get an answer if you show us that you made an effort. This should be added to the question rather than in the comments.
– José Carlos Santos
Nov 21 at 8:26

1

What does the "fallen T" mean?
– Christian Blatter
Nov 21 at 10:34

What you mean by fallen T?
– mmhh123
Nov 21 at 15:42

add a comment |

2

Welcome to MSE. It will be more likely that you will get an answer if you show us that you made an effort. This should be added to the question rather than in the comments.
– José Carlos Santos
Nov 21 at 8:26

1

What does the "fallen T" mean?
– Christian Blatter
Nov 21 at 10:34

What you mean by fallen T?
– mmhh123
Nov 21 at 15:42

Welcome to MSE. It will be more likely that you will get an answer if you show us that you made an effort. This should be added to the question rather than in the comments.
– José Carlos Santos
Nov 21 at 8:26

What does the "fallen T" mean?
– Christian Blatter
Nov 21 at 10:34

What you mean by fallen T?
– mmhh123
Nov 21 at 15:42

add a comment |

1 Answer
1

active

oldest

votes

up vote
0
down vote

accepted

Solve the equation for x.

Calculate P(A) and count the sets.

That set = { 10$^n$ : n nonnegative integer }.

Prove |A×B| = |A|×|B|.

One by one find the integers with square < 2.

How far will you have to look?

answered Nov 22 at 0:06

William Elliot

6,9072518

Thank you very much this help me a lot note its <8 not <2
– mmhh123
Nov 22 at 17:27

add a comment |

1 Answer
1

active

oldest

votes

1 Answer
1

active

oldest

votes

up vote
0
down vote

accepted

Solve the equation for x.

Calculate P(A) and count the sets.

That set = { 10$^n$ : n nonnegative integer }.

Prove |A×B| = |A|×|B|.

One by one find the integers with square < 2.

How far will you have to look?

answered Nov 22 at 0:06

William Elliot

6,9072518

Thank you very much this help me a lot note its <8 not <2
– mmhh123
Nov 22 at 17:27

add a comment |

up vote
0
down vote

accepted

Solve the equation for x.

Calculate P(A) and count the sets.

That set = { 10$^n$ : n nonnegative integer }.

Prove |A×B| = |A|×|B|.

One by one find the integers with square < 2.

How far will you have to look?

answered Nov 22 at 0:06

William Elliot

6,9072518

Thank you very much this help me a lot note its <8 not <2
– mmhh123
Nov 22 at 17:27

add a comment |

up vote
0
down vote

accepted

Solve the equation for x.

Calculate P(A) and count the sets.

That set = { 10$^n$ : n nonnegative integer }.

Prove |A×B| = |A|×|B|.

One by one find the integers with square < 2.

How far will you have to look?

answered Nov 22 at 0:06

William Elliot

6,9072518

Solve the equation for x.

Calculate P(A) and count the sets.

That set = { 10$^n$ : n nonnegative integer }.

Prove |A×B| = |A|×|B|.

One by one find the integers with square < 2.

How far will you have to look?

answered Nov 22 at 0:06

William Elliot

6,9072518

answered Nov 22 at 0:06

William Elliot

6,9072518

answered Nov 22 at 0:06

William Elliot

6,9072518

answered Nov 22 at 0:06

William Elliot

6,9072518

Thank you very much this help me a lot note its <8 not <2
– mmhh123
Nov 22 at 17:27

add a comment |

Thank you very much this help me a lot note its <8 not <2
– mmhh123
Nov 22 at 17:27

Thank you very much this help me a lot note its <8 not <2
– mmhh123
Nov 22 at 17:27

add a comment |

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