Power And Index Test-2

Result

Power And Index Test-2

Score
-
out of -
Rank
-
out of -

TIME Taken - -

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Weekly Quiz Competition

Question 1
1 / -0.25

the value of x is

A
-8

B
-3

C
3

D
2
Question 2
1 / -0.25

is equal to

A
1/2

B
-1/2

C
2^-16

D
2^-13

Solution

The correct option is B.
(-½)^1 = -½
Power 1 will make no difference to the number.
Question 3
1 / -0.25

is equal to

A

B

C

D
Question 4
1 / -0.25

Which of the following is not equal to 1/2?

A
5 x 10^-1

B
0.5 x 10^-1

C
0.05 x 10

D
0.005 x 10²

Solution

- After solving , we got to know that 0.5 x 10^-1 will be 5/100 = 1/20 not 1/2
Hence, B is the correct ans
Question 5
1 / -0.25

is equal to

A
1/2

B
-2

C
2^-16

D
2^-13
Question 6
1 / -0.25

is equal to

A
2^-2

B
2^-5

C
2^-16

D
2^-13
Question 7
1 / -0.25

The value of (3^-1 +4^-1 )^-1 ÷ 5^-1 is

A
60/7

B
7/10

C
4/5

D
11/15
Question 8
1 / -0.25

In   the value of x is

A
3

B
1

C
-2

D
-1

Solution

The correct option is A.
(5/12)^-4 * (5/12)^3x = (5/12)^5
⇒(5/12)^-4+3 = (5/12)^5
⇒-4+3x = 5
⇒3x = 9
⇒x = 3
Question 9
1 / -0.25

If (2^3x-1 + 10) ÷ 7 = 6, the value of x is

A
0

B
-2

C
1

D
2

Solution
Question 10
1 / -0.25

The value of is

A
6

B
1/9

C
-2/9

D
-8
Solution
- Lets us segregate this question and solve it into two halves

(4^-1 + 8^-1 )

= (1/4 + 1/8)

= 3/8

Now, 3/8 ÷1/(3/2)^-.3

= 3/8 x (2/3)³

= on solving we get our answer = 1/9 that is option B