Question
If Rs. 4000 becomes Rs. 5760 in 2 years at compound
interest (compounded annually), then what is the annual rate of interest?Solution
We can say that the value for rate of interest cab be taken as ‘r’ = 5760 = [4000 × (1 + (r/100))2] (5760/4000) = (1 + (r/100))2] 1.44 = (1 + (r/100))2] 1.2 = (1 + (r/100))] Hence the value for r will be = 20%
9 10 6 15 -1 ?
...There are 3 series, you have to find value of a, b, c and then establish relation among a,b,c.
19, 25, 45, a, 553, 2767
1560 760 360 160 6...
13 22 40 67 103 ?
...112 ? 336 840 2520 8820
...2, 12, 90, 240, ?, 1260
1 5 13 25 41 ...
43 36 50 29 ? 22
...5 3 3 5 15 ?
The following expressions form a series followed by a (?). Find the odd one out first and then find that what will come in place of the question mark (?...
5 16 ? 66 119 200
...
