It is: 3 times (37+45) = 246
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"Sum" usually implies that you add at least two numbers together; not just one. For completeness sake, you might thing of the "sum of a single number" as the number itself.
The number is 45. The sum of its digits i.e. 4+5=9 Five times the sum of its digits i.e. 5 times 9 which is 45
Yes, sum of integers 1 - 9.
45 + 37 = 82
The formula for finding the nth square number is n^2. Therefore, the 3rd square number is 3^2 = 9, and the 6th square number is 6^2 = 36. To find the sum of the 3rd and 6th square numbers, you add them together: 9 + 36 = 45. So, the sum of the 3rd and 6th square numbers is 45.