A sum of money invested for 2 years at 20% compounded annually and similar money invested for 3 years on simple interest at 10% per annum. If the difference between interests is Rs. 280, then find the sum of money.
Effective rate of interest for CI = x + y + (xy/100) = 20 + 20 + (20 × 20)/100 = 44% Effective rate of interest for SI = 3 × 10 = 30% Difference in rates = 44 - 30 = 14% Let sum be S. Hence, 14% of S = 280 ⇒ S × (14/100) = 280 ⇒ S = 2,000
5, 15, 30, 135, 405, 1215, 3645
Find the wrong number.
17, 25, 37, 47, 65, 81
8, 20, 48, 108, 232, 482
Find the wrong number in the given series.
17, 17, 51, 255, 1789, 16065
Find the wrong number in the following number series:
2500, 1000, 400, 160, 60
Find the wrong number in the given series.
5, 3, 6, 17.25, 64.75
A series is given with one wrong term. Select the wrong number from the given series.
17, 29, 43, 59, 77, 97, 112
60 32 4 8 -4
In the following question, select the wrong number from the given alternatives.
48, 50, 52, 57, 59, 68, 75
3. 8, 15, 24, 34, 48, 63
