Question
All the digits of the number ‘7358698' are arranged in
ascending order from right to left. What is the sum of the product of first two digits from the left end and the last digit from the left end?Solution
7Â Â Â Â Â Â Â Â Â 3Â Â Â Â Â Â Â Â Â 5Â Â Â Â Â Â Â Â Â 8Â Â Â Â Â Â Â Â Â 6Â Â Â Â Â Â Â Â Â 9Â Â Â Â Â Â Â Â Â 8Â Â Â Â Â Â Â Â Â 9Â Â Â Â Â Â Â Â Â 8Â Â Â Â Â Â Â Â Â 8Â Â Â Â Â Â Â Â Â 7Â Â Â Â Â Â Â Â Â 6Â Â Â Â Â Â Â Â Â 5Â Â Â Â Â Â Â Â Â 3 The product of first two digits from the left end is (9 X 8) = 72. The last digit from the left end is 3. So, the sum of first two digits from the left end and the last digit from the left end is (72 + 3) = 75.
- Determine the largest common factor of 1764, 4410, and 8820.
22Â Â Â Â Â Â Â Â Â Â 44Â Â Â Â Â Â Â Â Â Â 176Â Â Â Â Â Â Â Â 1078Â Â Â Â Â Â 8448
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