Question
If an investment of Rs. 5,120 grows to Rs. 6,480 in two
years when compounded annually at an interest rate of 'R%' per annum, calculate the value of 'R'.Solution
ATQ; 6480 = 5120 × {1 + (R/100)}2 {1 + (R/100)}2 = (6480/5120) = (81/64) Or, {1 + (R/100)} = √(81/64) = (9/8) Or, (R/100) = (9/8) – 1 Or, (R/100) = (1/8) Or, R = 12.5
25   25   37.5   ?   328.125   1804.6875
18, 35, 68, 117, ?, 263Â
Find the missing number, in the given number series.
42, 52, 72, 112, 192, ?
Find the missing character.
Find the missing number in the given number series.
512, 128, 32, 8, ?, 116Â Â Â 25Â Â Â 36Â Â Â 49Â Â Â 64Â Â Â Â ?
7 47 ? 223 359 527
...What will come in the place of questions (?) mark in the following questions.
1279, 1265, ? , 1225, 1193, 1149
30, 43, 58, 75, 94, ?
What will come in place of the question mark (?) in the following series?
81, 83, 87, 95, 111, ?