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25 Answered Questions for the topic Number

Number Math Complex

01/09/19

Help with complex numbers

Hello i'm getting ambiguity with the expression 1^i. 1 can be written as e^0 or e^(2pi*i) this leads to confusion because solving (e^0)^i, I obtain 1 and I simplify e^(2pi*i)^i and obtain e^(-2pi)... more
Number

10/07/18

word problem

hank owns a fruit stall. he sells 11 apple and 5 oranges for £2.71. one apple cost 16p. how much is one orange cost?
Number

06/30/18

Is whole number is set under multiplication?yes or no

Whole numbers

04/08/18

My understanding of fraction is that we are catering to part of a whole. Is that technically correct?

What i mean to ask is if a/b is the fraction a the numerator can take any value positive, negative or 0 whereas the denominator represented by b over here should always be positive as whole should... more
Number Maths Numbers

03/10/18

Maths question on Factors and Primes

A rambler club buys hats in packs of 12 and scarves in packs of 18. The club buys exactly the same number of hats and scarves.   What is the smallest number of packs of hats and the smallest... more
Number

02/04/18

When 70 % of a number is added to 90 the result the number again. The number is :

When 70 % of a number is added to 90 the result the number again. The number is :
Number

12/22/17

The largest number in the list {3/10,7/20,14/25,27/50,49/100} is_______

Can you solve the problem below:  The largest number in the list {3/10,7/20,14/25,27/50,49/100} is_______
Number

11/27/17

Alex has $4560 in the bank. he is paid interest of 3.5% at the end of the year. How much money does he have in his account at the start of the next year?

i think the answer is 159.6 but not sure please help!!
Number

02/15/17

Number System

The greatest number that can be rounded of to nearest hundred thousand is 349999. Find the smallest number that can also be rounded off to the same nearest hundred thousand.
Number

12/17/16

Ninety-five passengers rode in a train from City A to City B. Tickets for regular coach seats cost ​$122. Tickets for sleeper cars seats cost ​$297 The receipts

Ninety-five passengers rode in a train from City A to City B. Tickets for regular coach seats cost $122. Tickets for sleeper cars seats cost $297 The receipts for the trip totaled $19,640. How many... more
Number

09/03/16

Numbers and

when an integer r is divided by 5 the remainder is 2. If the product of 7 and r is divided by 5 what would the remainder be? 
Number Math Numbers

04/26/16

the sum of the ages of three Romano brothers is 63. if their ages can be represented as consecutive integers, what is the age of the middle brother?

consecutive integers are integers that follow each other in order.
Number

04/24/16

A number decreased by 10 equals 6 times that number. Find the number

Find the number   
Number

02/11/16

64.42+ 50%

Help please help please I am bad a math
Number String Inches

04/25/15

How many beads on this string?

There are 4mm beads on a 16 inch string. how many beads are on the string?
Number

02/22/15

If I write one digit per second, how long will it take me to write out all the numbers from 1 to 1989?

If I write one digit per second, how long will it take me to write out all the numbers from 1 to 1989? a. 33 min 9s b. 1 h 22 min 39s c. 1 h 54 min d. 1 h 54 min 9s      
Number

02/18/15

What year is it if it is the 6th year of the 3rd decade in the 5th century AD?

What year is it if it is the 6th year of the 3rd decade in the 5th century AD?   My answer is 425 but the answer is 426. I think 6th year is 5(start from 0)
Number

02/11/15

What is three times two to the power of three all to the power of three?

What is three times two to the power of three all to the power of three?   a. 100,776 b. 13,824 c. 7,964 d. 3323  
Number Fixed

04/04/14

Determine the size of the sample space

An experiment consists of choosing a subset from a fixed number of objects where the arrangement of the chosen objects is not important. Determine the size of the sample space when you choose the... more
Number Term Expansion

04/01/14

Which term of the expansion contains x^8

Which term of the expansion of (x+5)10 contains x8? the term number that contains x8 is?  
Number Term Expansion

04/01/14

Which term of the expansion contains x^10

Which term of the expansion of (x2+2)8 contains x10? the term number that contains x10 is?
Number Term Expansion

03/30/14

Which term of the expansion contains x^8

Which term of the expansion of (x+5)10 contains x8? the term number is?

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