Question
The cost of diamond varies directly as the square of its
weight. A diamond broke into four pieces with weights in the ratio 1 : 3 : 4 : 5. if the loss in the total value of the diamond was Rs. 118,000. The price of the original diamond was? STSolution
Let the weight of the pieces of diamond be x, 3x, 4x, 5x Total weight of diamond = x + 3x + 4x + 5x = 13x Price ∝ (weight)2 => Price = k(weight)2 ; where, K is constant Original price = k(13x)2 Price of pieces = (kx2 + 9kx2 + 16kx2 + 25kx2) = 51kx2 Loss in price = 169kx2 – 51kx2 = 118kx2 which is given as 118,000 => 118kx2 = 118000 => kx2 = 1000 Original price = 169kx2 = 169 x 1000 = 169000
3. 8, 15, 24, 34, 48, 63
Select the wrong term in the series.
44, 47, 41, 50, 38, 53, 40
Select the wrong term in the series.
10, 19, 23, 52, 61, 133, 149
Find the wrong number in the following number series:
2500, 1000, 400, 160, 60
A series is given with one wrong term. Select the wrong number from the given series.
17, 29, 43, 59, 77, 97, 112
8, 20, 48, 108, 232, 482
In this question, one term in the number series is wrong. Find out the wrong term.
130, 135, 143, 154, 168, 183, 205
Find the wrong number.
17, 25, 37, 47, 65, 81
Arrange the following words in a logical and meaningful order.
1. Monkey
2. Elephant
3. Rat
4. Fly
5. Lion
Select the number from among the given options that is wrong in the following series.
22, 30, 46, 78, 146, 270
