Q14. If 7 9 10 = 8, 9 11 30 = 5, 11 17 21 = 13, what is the value of 23 4 15 ?
Detailed Solution
Let's analyze the given operations to find the pattern: 1. 7 9 10: Sum = 7 + 9 + 10 = 26. The result is 8, which is the sum of the digits of 26 (2+6=8). 2. 9 11 30: Sum = 9 + 11 + 30 = 50.
The result is 5, which is the sum of the digits of 50 (5+0=5). 3. 11 17 21: Sum = 11 + 17 + 21 = 49. The result is 13, which is the sum of the digits of 49 (4+9=13). The pattern is to sum all the numbers involved in the operation, and then sum the digits of that total sum.
Applying this to the final expression: 23 4 15: Sum = 23 + 4 + 15 = 42. Sum of the digits of 42 = 4 + 2 = 6. Therefore, the value is 6.
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