Answers. Therefore 144 is the sum of the first 12 odd numbers.
What is the sum of the first odd numbers?
The sum of all consecutive odd numbers beginning with 1 is always equal to the square of the number of digits added. If 1,3,5,7,9,11,…, (2n1) are the odd numbers, then sum of first odd number = 1. Sum of first two odd numbers = 1 + 3 = 4 (4 = 2 x2) .
What is the 12th odd number?
2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30 are even numbers. Odd numbers always end with the digit 1, 3, 5, 7 or 9. 1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27, 29, 31 are odd Counting.
What is the sum of the first 10 odd numbers?
The number sequence 1, 3, 5, 7, 9, . . . . , 19. Therefore, 100 is the sum of the first 10 odd numbers.