4950
-99
-99
You can either just add them up or use quick logic to add them in pairs: All the numbers from 1 to 49 match up with 51 through 99 to = 49 pairs of 100 = 4900, than add the two you skipped 4900 + 50 + 100 = 5050 total
There are 90 two-digit numbers in the set of natural numbers. These numbers range from 10 to 99, inclusive. To find the total, you can subtract the smallest two-digit number (10) from the largest (99) and add one: (99 - 10 + 1 = 90).
1. The numbers 1 through 99 are 99 different numbers; each one occurs once.
-99
-99
66+.99 1+65.99 There's an infinite number of combinations
-99
-99
4700
It's simple: 1-49 matches up with 51-99 to add up to 100- 4900 50 100 5050 is the answer.
-99
99
You can either just add them up or use quick logic to add them in pairs: All the numbers from 1 to 49 match up with 51 through 99 to = 49 pairs of 100 = 4900, than add the two you skipped 4900 + 50 + 100 = 5050 total
102
-99