Question

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Solve Question No. 96

Answer 1

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Final Answer :
Ans .(b) 13

Here,
This technique is usually folliwed by vegetable vendors who weight their products if they dont have sufficient weights to measure.

Let there be two pans A and B available to us to measure weight of products .

Cases Possible:

1) We can directly measure 1 kg , 3 kg and 9 kg

Objects by putting weights on one side and objects on other side.

A. B
1 kg object. 1 kg weight
3 kg object 3 kg weight
9 kg object. 9 kg weight

From here, we can measure 3 different objects
of different weight.

2) By taking two weights at a time:

A. B
4 kg object. (1+3)kg weight
10 kg object. (9+1)kg weight
12 kg object. (9+3)kg weight

here, we can measure three different weights.

3) By taking all three at a time :

A. B

14 kg object . ( 1+3+9) weight

Here, we can measure one different weight.

4) We can place some weight on One pan with object and other weight on other pan.

O means Object and W means Weight

A. B

2 kg O + 1 kg W. 3 kg W
8 kg O + 1 kg W. 9 kg W
6 kg O. + 3 kg W. 9 kg W
5 kg O + (1+3)kg W. 9 kg W

11 kg O + 1 kg W (9+3)kg W
7 kg O. + 3 kg W. ( 9 +1) kg W.

Finally , We can measure
1,3,9,4,12,10,14,2,8,6,11 ,5 & 7 kg objects .

These are 13 objects of different mass which we can measure from weights 1 , 3 and 9 kg .

Hope, you understand my answer and it may helps you !!

Answer 2

Step-by-step explanation:

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