250
The answer will depend on when you start counting from!
If you want to sum up numbers 1 to N, you can do it this way. Sum = (N+1)*(N/2).The reason this works: say you want to sum up 1 through 10. You have 10+1, 9+2, ..., 6+5. Each of these equals 11 [N+1]. You added 11 five times (N/2). Sum of 1 to 102 = (102+1)*(102/2) = 103*51 = 5253. You can check it by summing up the numbers with a spreadsheet.
There are no two consecutive numbers that add or multiply to 102.
102
1, 2, 10, 11, 12, 20, 21, 22, 100, 101, 102, 110, 111, 112, 120
There are 27 prime numbers less than 102.
The numbers that are divisible by 102 are infinite. The first four are: 102, 204, 306, 408.
The prime numbers between 102 and 113 are 103, 107, and 109.
Any number of the form 102*k where k is an integer.
The two numbers would be 102 and 104. (102+104=206)
2