If $(a+b)^2 = 5 + 2\sqrt{6}$, what can be the possible value of 'b' from the following?

$-224 + (-314) \times 9 = ?$

$\frac{1}{0.004}$ is equal to:

Which of the following is/are prime numbers?

(A) 241

(B) 337

(C) 391

(D) 571

Choose the correct answer from the options given below:

Which one of the following statement(s) is/are correct?

(A) Every whole number is a natural number.

(B) Every natural number is a whole number.

(C) Every integer is a whole number.

(D) Every rational number is a whole number

Choose the correct answer from the options given below:

The difference of the greatest and the smallest of the fractions $\frac{1}{2}$, $\frac{8}{11}$, $\frac{7}{8}$, $\frac{7}{9}$, $\frac{5}{6}$ is:

Consider the following statements

(A) Square of an odd number is of the form 4n + 1.

(B) 1 is a prime number.

(C) 83356768 is divisible by 11.

Which of the statement(s) given above is/are incorrect?