Which of the following is a natural number?
0
- 1
15
- 15
If ξ = {p, q, r, s, t, v} and y = {p, r, v}. List the members of y'.
{q, s, t}
{p, q, r}
{r, s, t}
{s, t, v}
A man spends $ 300 on food. This is 3/5 of his salary. Calculate his salary.
$ 1500
$ 1800
$ 1000
$ 500
12 + 3 1/4 =
25/4
47/4
61/4
75/4
Simplify the ratio 2 m : 40 cm.
1 : 20
20 : 1
5 : 1
1 : 5
Express 2024 gm into kg.
20240 kg
202.4 kg
20.24 kg
2.024 kg
5.87 + 1.03 + 0.1 =
7
6.98
7.30
6.45
Calculate 27 ÷ 4 1/2.
4
6
10
12
Calculate (- 5)2.
- 10
- 25
25
Which of the following is a prime number?
21
23
27
