Question
Which metal did humans utilize
first?Solution
Copper holds the distinction of being the first metal used by humans, dating back over 10,000 years. A copper pendant found in northern Iraq, dated around 8700 B.C., underscores copper's longstanding utility in human civilization. For nearly five millennia, it was the only metal known and used for various applications.
E scored 25% marks in an exam whereas F scored 250 marks in the same exam. If the score of F is 100 marks more than that of E, th...
Ajay spent 30% of his monthly income on rent and 46% of the remaining on food and the rest amount is saved by him which is Rs. 3213, then find the month...
Ramesh's salary drops from Rs. 45,000 to Rs. 37,800. What is the percentage fall in his salary?
The marks scored by a boy in three subjects are in the ratio 4 : 3 : 2. Boy scored an overall aggregate of 60% in the exam. If the maximum marks in each...
If 35% of 40% of 7/5 of a number is 490, then what is 25% of 2/3 of that number?
Arvind sold 40% more apples than Vishnu. Ratio of number of apples sold by Vishnu to number of apples sold by Bishwa is 4:7. Find the number of apples s...
There are 100 students in a particular class. 60% students play cricket, 25 % play football and 15% play both the games. What is the number of students ...
- A number is first increased by 200%, then increased by 10% and then decreased by 90%. If the resultant number is 108, then find the original number.
In a head-to-head election, 15% of the total votes were invalid. Of the valid votes, 60% were in favour of the winning candidate, and the victory margin...
If 20% of a = b, then b% of 20 is the same as: