Question
Rajni borrowed Rs. 1,500 from a bank and repaid the
entire amount with interest in two equal annual installments, the first instalment being paid a year after Rajnish borrowed from the bank. If the rate of interest was 40% per annum, compounded annually, then what was the value (in Rs.) of each instalment paid by Rajni.Solution

24, 168, 28, 140, 35, ?Â
- What will come in place of the question mark (?) in the following series?
121, 115, 102, 82, 55, ? What will come in place of the question mark (?) in the following series?
36, 85, ?, 230, 330, 451
48, 95, 283, 1129, ?, 33841
38, 41, 50, ?, 158, 401Â
What will come in place of the question mark (?) in the following series?
102, 111, 136, 185, 266, ?
Find the missing number in the given number series.
4, 9, 20, 37, 60, ?- What will come in place of the question mark (?) in the following series?
1, 2, 5, 16, 65, ? 2.5, 5, 15, 60, ?, 1800, 12600Â
8Â Â Â Â 24Â Â Â Â Â Â 48 Â Â Â Â Â 144Â Â Â Â Â Â 288 Â Â Â Â Â Â ?
...