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Exponents
Class 8
Exercise/MCQ Set 4
1. Simplify :- [(4/5)
-1
- (3/4)] ÷ (2/3)
-3
-4/27
4/27
27/8
2/4
2. Simplify :- (8
-1
x 7
2
)/ 2
-4
49
2
8
98
3. (-1)
58
is equal to
-1
1
58
-58
4. Evaluate √(15
2
- 5
3
)
2
15
10
5
5. Simplify :- (16a
3
b
-4
c
3
) ÷(24a
-2
b
2
c
-4
)
2/3 a5b-6c7
2/3a-2bc
3abc-7
2/3 ab6c7
6. Find the value of n : (3/4)
-3
x (3/4)
10
= (3/4)
2n+1
3
7
6
4
7. Simplify :- [2
4
x (3
3
)
2
x 343] ÷(24 x 3
7
x 7
2
)
14
42
9/14
14/9
8. Find the value of x :- (25)
x
x 5
8
= (125)
3x-2
-6
2
-2
7
9. When we solve this (3
-20
x 3
-20
x 3
50
) / (3
-6
)
-3
we get 3
-8
True
False
10. If 7 x 7
2
x 7
3
x 7
4
x 7
5
x 7
6
x 7
7
x 7
8
= (7
x
)
x
, then Find x
6
5
36
7
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Exercise/MCQ Set 1
Exercise/MCQ Set 2
Exercise/MCQ Set 3
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time: 0.3224711418
