Question
On a certain sum, the simple interest for 2 years at 10%
per annum is Rs 1000. Find the difference between the compound interest and simple interest on the same sum, at the same rate and for the same period.Solution
Let principal = P. SI for 2 years = (P × 10 × 2)/100 = (P/5) Given P/5 = 1000 ⇒ P = 5000 Difference (CI − SI) for 2 years at rate r% is: P × (r/100)² Here r = 10% ⇒ r/100 = 0.10 Difference = 5000 × (0.10)² = 5000 × 0.01 = Rs 50.
What should come in place of (?) question mark in the given number series.
5, 9, 17, 33, ?, 129
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...What value should come in the place of (?) in the following number series?
180, 194, ?, 264, 320, 390
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What will come in place of (?) Question mark in the given number series.
1, 2, 5, 14, 41, 122, ?
What will come in place of the question mark (?) in the following series?
10, 135, ?, 226, 234, 235
230 192 172 ? 122 100
...What will come in place of the question mark (?) in the following series?
72, 108, 172, ?, 416, 612
