Rationalise the denominator of 3/√5.
3
3√5/5
3/√5
3√5
(-7/10)3 ÷ (-7/10)9 = ________________
(-1/10)12
(-10/7)12
(-7/10)-6
(-10/7)6
((2/5)2)3 × (1/5)-4 × 5-1 × 1/4
23/53
24/53
24/52
None of these
(2/7)3 × (2/7)5 ÷ (2/7)7 =
7/2
2/7
49/2
14/4
√5 + √5 = _______.
√10
√5
2√5
5
The reciprocal of (-2/5)3 = ___________
-8/15
125/8
-125/8
The expression of 81/256 in powers is ___________
125 = _____________
53
54
55
The standard from of 0.0000005 is ____________
5 × 107
5 × 10-7
5 × 106
5 × 10-6
√2 is ___________
a natural number
a rational number
an irrational number
