Question
What is the atomic number of silicon, a component of
quartz?Solution
Silicon, a fundamental element in quartz, has the atomic number 14. It bonds with oxygen to form silicon dioxide (SiO2), the chemical compound of quartz, which is integral to various technological and industrial applications.
- The average of 36 numbers is 75. If every number is multiplied by 9, what will be the average of the resulting numbers?
The average age of 22 girls is 40 years. If the age of two more girls is added the average decreases by 2.5 years. What is the sum of the age of new girls?
In a company, the average age of 40 employees is 20 years. When the ages of two managers, one 'a' years old and the other 'a + 10' years old, are includ...
20 students go for a picnic. 10 of them spent Rs. 64 each on their food and rest spent Rs.4 more than the average expenditure of all 20. What was the to...
- The average of six numbers is 54. When two more numbers are included, the average increases by 3. Find the average of the numbers included.
The average of 19 numbers is 16.The average of first 9 numbers is 13 and that of the last 9 numbers is 15. What will be the 10th number?
The average of 10 observations is 60. It was realized later that an observation was misread as 39 in place of 93. The correct average is:
Average run scored by a batsman in 60 innings is 180. In next 6 innings, he scored runs with an average of ‘x’ so that his overall average increases...
The average salary of 5 employees is ₹60,000. If the highest and lowest salaries are excluded, the average becomes ₹58,000. The lowest salary is ₹...
The average of the current ages of 'Anoop', 'Bhanu', and 'Rakesh' is 40 years. Their ages are in arithmetic progression (AP), wit...
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