All prime numbers are odd numbers

Answer: Option A

Answer: Option B

Explanation:

It is false, 2 is an even number

Answer: Option D

Explanation:

It is a GP. with r = 2, ie $$\begin{aligned} 2^1, 2^2, 2^3... \end{aligned}$$
If number of terms is n. Then,
$$\begin{aligned} 2 \times 2^{n-1} = 1024 \end{aligned}$$ =>
$$\begin{aligned} 2^{n-1} = 512 \end{aligned}$$
or $$\begin{aligned} 2 \times 2^{n-1} = 2^9 \end{aligned}$$
so n-1 = 9 => n = 10

Answer: Option C

Explanation:

(1056 / 23) gives remainder 21

21 + 2 = 23, So we need to add 2

Answer: Option B

Explanation:

$$\begin{aligned} \frac{abc}{bcd} = \frac{385}{1001} => \frac{a}{d} = \frac{5}{13} \end{aligned}$$ So d = 13