Question
The simple interest on a certain sum of money for 4
years at 16% per annum is 2/5th of the compound interest on Rs. 6000 for 2 years at 20% per annum. The sum placed on simple interest is:Solution
CI = [6000 × (1 + 20/100)2 – 6000] = 6000 × (6/5) × (6/5) – 6000 = Rs 2640. Now SI = 1056 (i.e. 2640 × (2/5)) Therefore,  (P × 4 × 16)/100 =1056 So P = Rs 1650.
Find the wrong number in the given number series.
16, 24, 36, 54, 81, 120.5
- 2024, 1583, 1193, 822, 498, 209
33Â Â Â Â 34Â Â Â 37Â Â Â 42Â Â Â 48Â Â Â 58
66, 115, 34, 155, 14, 211
360, 322, 286, 248, 220, 190
- Find the wrong number in the given number series.
7, 35, 42, 126, 128, 118 - Find the wrong number in the given number series.
2, 6, 14, 30, 62, 126 Find the wrong number in the given number series.
134, 163, 194, 231, 274, 315
125, 142, 199, 320, 489, 778
Find the wrong number in the given number series.
32, 48, 84, 146, 248, 392