The common ratio of the geometric series 1/8 + 1/4 + 1/2 + 1+2 is
1/2
2
4
1/4
If un+1 = un+5 and u1= 3,then u3 =
3
8
13
18
Round 78540 to the nearest 100 .
79000
78600
78500
80000
The standard form of 720 ×106 is
7200000
7200 ×105
7.2 ×108
none of these
The standard form of 600000 is
600000
6×105
60 ×104
None of these
100 m =
1 km
10 km
1000 km
0.1 km
Which of the following is a rational number .
√3
0.6
√8
√7
62×19 is approximately equal to
3600
3000
1200
2000
A centimetre is __________ part of a metre .
Ten
Tenth
a hundred
a hundredth
Write 5.58 to one decimal place .
5
5.6
5.7
5.59
