Q10. Simplify:-
125 x 53 x 15
5033x t
Answers
In Examples 1 to 3, there are four options, out of which one is correct.
Write the correct one.
Example 1: Out of the following, the number which is not equal to
– 8
27 is
(a) –
3
2
3
(b)
3
2
3
−
(c) –
3
2
3
−
(d)
222
333
−−− × ×
Solution: Correct answer is (c).
Example 2: ()() 5 3
− ×− 7 7 is equal to
(a) ( )8
−7 (b) – ( )8
7 (c) ( )15
−7 (d) ( )2
−7
Solution: Correct answer is (a).
Example 3: For any two non-zero integers x any y, x3 ÷ y3 is equal to
(a)
0
æ ö
ç ÷ è ø
x
y (b)
3
x
y
(c)
6
æ ö
ç ÷ è ø
x
y (d)
9
æ ö
ç ÷ è ø
x
y
Solution: Correct answer is (b).
In Examples 4 and 5, fill in the blanks to make the statements true.
Example 4: ( )
2 7 6 5 5÷ = ________
Solution: 52
Step-by-step explanation:
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