21.
|
If 3(x-y)=
27 and 3(x+y)=243, then x is equal
to
|
|
A. 0
|
B. 2
|
|
|
C. 4
|
D. 6
|
|
22.
|
If 5a = 3125, then
the value of 5(a - 3) is:
|
A.
|
25
|
B.
|
125
|
C.
|
625
|
D.
|
1625
|
|
23.
|
If ax =b, by= c and cz= a, then the
value of xyz is
|
|
A. 0
|
B. 1
|
|
|
C. 1/abc
|
D. abc
|
|
24. (1/216)-2/3 ÷
(1/27)-4/3 = ?
a. 3/4
b. 2/3
c. 4/9
d. 1/8
View Answer With Explanation
25.
|
49× 49× 49× 49 = ?
|
|
A. 4
|
B. 7
|
|
|
C. 8
|
D. 16
|
|
View Answer With Explanation
26.
|
If 2x = 3√32,
then x is equal to
|
|
A. 5
|
B. 3
|
|
|
C. 3/5
|
D. 5/3
|
|
27.
|
If 3(x - y) =
27 and 3(x + y) = 243, then x is
equal to:
|
|
|
28.
|
(0.04)-1.5 = ?
|
|
A. 25
|
B. 125
|
|
|
C. 250
|
D. 625
|
|
29.
If 5√5 * 53 ÷ 5-3/2 = 5a+2 , the value of a
is:
a. 4
b. 5
c.6
d. 8
View Answer With Explanation
30.
If √2n =64, then the value of n is:
a. 2
b. 4
c. 6
d. 12
View Answer With Explanation
Title : Surds And Indices Practice Test 3
Description : 21. If 3 ( x-y ) = 27 and 3( x+y )=243, then x is equal to A. 0 B. 2 C. 4 D. 6 ...
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