Question
A money-lender borrows money at 5% per annum and pays
the interest at the end of the year. He lends it at 12% per annum compound interest compounded half yearly and receives the interest at the end of 6 months. In this way he gains Rs. 2,944 a year. The amount of money he borrows, is (in rupees)Solution
Let the borrowed amount be x According to the question, x [( 1 + 6/100 )² - 1] –(x × 5 × 1)/100 = 2,944 (since Interest is compounded quarterly ) ⇒ x [ ( 1.06 )² - 1 ] – 0.05x = 2,944 ⇒ 0.1236x - 0.05x = 2,944 ⇒ 0.0736x = 2,944 ⇒ x = 2944/0.0736 = Rs. 40,000
165      155     135     ?     65      15
...3, 10, 29, 66, ?
What should come in place of (?) question mark in the given number series.
2, 6, 15, 31, 56, ?
What will come in place of (?) question mark in the given number series.
12, 27, 44, 65, ?, 139
120, 120, ?, 360, 900, 2700
What will come in place of (?) question mark in the given number series.
52, 61, 79, 106, 142, ?Â
In each of the following number series, one term is missing. Find the missing term.
7, 15, 31, 63, ?, 255
Find the missing number, in the given number series.
25, 30, 40, 57, ?, 120
What will come in place of the question mark (?) in the following series?
92, 153, 220, ?, 364, 443
(248 + 352)/(34 - 30) = ?
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