Consider the following statements (A) The difference between the place values of 9 and 5 in the number 639457 is 4. (B) The number \(\pi\) is an irrational number. (C) The sum of all the prime numbers from 1 to 20 is 67. (D) The difference between the face values of 5 and 3 in number 475839 is 2. Choose the correct answer from the options given below:

Which of the following authors is wrongly matched with their books?

"Jhumming" in the north-eastern states of India is an example of _________ ?

The mode and median of a set of 7 observations are 22.72 and 49.28, respectively. If each of the largest 3 observations of the set is increased by 4, then the median of the new set?

Two water pipelines are represented by the equations \(kx + 3y + 1 = 0\) and \(2x + y + 3 = 0\). For what value of \(k\), the pipelines cross each other?

What was the day of the week on 1st January, 2006?

Which of the following subjects is NOT included in the State List? (A) Post and Telegraph (B) Banking (C) Education (D) Trade and Commerce Choose the correct answer from the options given below:

Two candidates, \(X\) and \(Y\), appeared in an interview for two vacancies for the same post. The probabilities of their selection are \(\frac{1}{4}\) and \(\frac{1}{7}\), respectively. What is the probability that one of them will be selected?

A wire is looped in the form of a circle of diameter 70 cm. It is bent again into a square form. What will be the approximate length of the diagonal of the largest possible square? (Assume \(\pi = 22/7\) )