There are large number of silver coins weighing 2 gm, 5 gm, 10 gm, 25 gm, 50 gm each. Consider the following statements :
1. To buy 78 gm of coins one must buy at least 7 coins.
2. To weigh 78 gm using these coins one can use less than 7 coins.
Which of the statements given above is/are correct?
A
1 only
B
2 only
C
Both 1 and 2
D
Neither 1 nor 2
Correct Answer: Option C
Explanation
Let's solve this using the 'Unit Digit' and 'Difference' logic found in our PYQ context.
**Statement 1 Analysis (Buying = Additive)**
We need to pay exactly 78g. Let's look at the denominations: 5, 10, 25, 50. Notice something special? The