If the mean of five numbers is 10 and four of them are 8, 9, 11, 12, the fifth number is: MCQ with Answer and Explanation

Explanation:
Real income = Nominal income / Price index. To keep real income constant when prices rise 10% (index ×1.10), nominal income must also rise 10% (×1.10), so the ratio remains unchanged.

Explanation:
SRS gives reliable annual estimates of birth rates, death rates, and infant mortality rates.

Explanation:
India conducts its decennial census once every ten years; the last was in 2011, the next in 2021 (postponed).