Question
Quantity I. A sum of money becomes tripple in 4 years at
compound interest, compounded annually. In how many years it will become 9 times? Quantity II. What must be the rate of interest if a given amount tripled itself in 20 years? Study the following information carefully and answer the Questions given below:Solution
Quantity II. Since the amount was Rs 100. It becomes Rs 300 in 20 years. Rs 300 – Rs 100 = Rs 200 interest In 20 years, interest is Rs 200 In 1 year, the interest is Rs 200/20 Rate of interest = 10% per annum Hence Quantity I < Quantity II
200 ? 96 38.4 7.68 0
36, 72, 47, 63, ?, 58
4, 12, 36, 108, ?, 396
15, 31, 67, 131, ?, 375
In each of the following series, one term is missing. Find the missing term.
5, 13, 29, 61, 125, ?
What should come in place of (?) question mark in the following number series.
256, 128, 64, 32, 16, ?
12, 27, ?, 113, 141, 285, 313
11, ? 220,  660, 1320,  1320Â
2.5, 5, 15, 60, ?, 1800, 12600Â
- What will come in place of the question mark (?) in the following series?
6, 6, 9, ?, 32, 56