Numbers, General Mathematics

Question: If`x/y=3/5`then`(6/7-(2y-x)/(2y+x))`
A
`9/35`

B
`11/28`

C
`29/91`

D
`18/13`

Note: Not available
1. Report
Question: If `a^3`b=abc=180 and a,b,c are positive integers,than the value of c is :
A
110

B
25

C
15

D
None

Note: Not available
1. Report
Question: `(1-(1/3))(1-(1/4))(1-(1/5))...(1-(1/n))`is equal to :
A
`1/n`

B
`2/n`

C
`2/(n(n+1))`

D
`(2(n-1))/n`

Note: Not available
1. Report
Question: When simplified,the product `(2-1/3)(2-3/3)(2-5/7)...(2-997/999)`. is equal to :
A
`5/999`

B
`1001/999`

C
`1001/3`

D
None of these

Note: Not available
1. Report
Question: `(256)^18 xx (256)^07` is equal to :
A
4

B
6

C
8

D
64

Note: Not available
1. Report
Question: `(5)^25 xx (125)^25` is equal to :
A
√5

B
5

C
5√5

D
25

Note: Not available
1. Report
Question: Give that`(1^2+2^2+3^2+...10^2)=385`,than the value of `(2^2+4^2+6^2+...+20^2)` is equal to :
A
770

B
1540

C
1155

D
`(385)^2`

Note: Not available
1. Report
Question: If`(64)^2-(36)^2=20~z` ,the value of ~z is:
A
70

B
180

C
120

D
N0ne

Note: Not available
1. Report
Question: If x*y=`(x+2)^2`(y-2),than the value of (7*5) is :
A
175

B
205

C
213

D
243

Note: Not available
1. Report
Question: If `2^x-1+2^x+1=320`,than the value of x is :
A
4

B
5

C
6

D
7

Note: Not available
1. Report

Question: If`x/y=3/5`then`(6/7-(2y-x)/(2y+x))`