Among the numerous tribal revolts, the Santhal Hool uprising was the most massive. The Santhals, who live in the area between Bhagalpur and Rajmahal, known as Daman-i-Koh, rose in revolt; made a determined attempt to expel the outsiders — the dikus — and proclaimed the complete annihilation of the alien regime. The Daman-i-Koh was a densely forested and hilly area.

The Sabarmati ashram was home to Mahatma Gandhi from 1917 to 1930 and served as one of the main centres of the Indian freedom struggle. Salt satyagraha was started from Sabarmati ashram.

• The G-20 is made up of 19 countries and the European Union.

• Spain is a permanent invited guest to the group’s meetings.

• The G-20 group was formed in 1999.

• The G-20 group was established to discuss policy pertaining to the promotion of international financial stability.

• The members of the G-20 are Argentina, Australia, Brazil, Canada, China, France, Germany, India, Indonesia, Italy, Japan, Republic of Korea, Mexico, Russia, Saudi Arabia, South Africa, Turkey, the United Kingdom, the United States and the European Union.

* In August 2020, Turkey discovered large natural gas reserves in the Black Sea coast.

* The discovery included 320 billion cubic metres of natural gas.

* Turkey highly depends on Russia, Iran, and Iraq for its energy resources.

* The discovery of the new oil exploration will help to reduce the country's imports.

According to the question,

If we interchange the + and – sign the above equation become correct.

15 + 9 ÷ 6 × 10 – 5

=>15 + 15 – 5

=> 30 – 5 => 25

Hence, option (c) is the correct answer.