(2/7)3 × (2/7)5 ÷ (2/7)7 =
7/2
2/7
49/2
14/4
( √3 - √2 )2 is a /an _____ number.
Rational
Irrational
Real
None
√2 is ___________
a natural number
a rational number
an irrational number
None of these
(-7/10)3 ÷ (-7/10)9 = ________________
(-1/10)12
(-10/7)12
(-7/10)-6
(-10/7)6
(-3)4 = ______________
81
-18
12
-12
For any rational number a, ao =
0
1
a
Rationalise the denominator of 3/√5.
3
3√5/5
3/√5
3√5
The lowest rationalising factor of 5√2 is _______.
5√2
5
2
√2
(-2/8)2 =
1/16
-1/6
2/16
4/16
Express as a rational number as _________.
53/99
8/15
5/22
47/90
