The standard deviation of the set {10, 10, 10, 10, 10} is

The likes and professions of five friends Rosy, Mary, Lily, Andy and Daisy are given. Consider the following information and answer questions based on it.

1. Rosy likes yellow and is a student.
2. The Librarian likes Green.
3. Mary and Andy like Purple and Blue respectively and neither of them is a Teacher.
4. Lily likes Brown and the Inspector likes Blue.
5. One of the five is a Principal.

Which among the following is the wrong pair?

The likes and professions of five friends Rosy, Mary, Lily, Andy and Daisy are given. Consider the following information and answer questions based on it.

1. Rosy likes yellow and is a student.
2. The Librarian likes Green.
3. Mary and Andy like Purple and Blue respectively and neither of them is a Teacher.
4. Lily likes Brown and the Inspector likes Blue.
5. One of the five is a Principal.

Who is the Principal?

The likes and professions of five friends Rosy, Mary, Lily, Andy and Daisy are given. Consider the following information and answer questions based on it.

1. Rosy likes yellow and is a student.
2. The Librarian likes Green.
3. Mary and Andy like Purple and Blue respectively and neither of them is a Teacher.
4. Lily likes Brown and the Inspector likes Blue.
5. One of the five is a Principal.

Which colour does the Teacher like?

The ratio of spirit and water in the two vessels is 5 : 1 and 3 : 7 respectively. In what ratio the liquid of both the vessels should be mixed such that a new mixture containing half spirit and half water is obtained?

Which of the statements given below are correct?

A) In 2017 Pro Kabaddi League, Sandeep Narwal played for Bengaluru Bulls.

B) In 2017, Dani Pedrosa raced in MotoGP for Honda.

C) In 2017, Glenn Maxwell captained the IPL team Kolkata Knight Riders.

On January 16, 2018 the Supreme Court ruled the attacks and interference on adults opting for inter-caste marriage as ‘absolutely illegal’ in the petition filed by which NGO in 2010?

In October 2017, which two ministries jointly launched ‘SAATHI’ (Sustainable and Accelerated Adoption of efficient Textile technologies to help small Industries) initiative?