Question

8. Write the following pairs of consecutive triangular numbers and then verify that
their sum is a square number:
(i) the fifth and the sixth triangular numbers;
(ii) the ninth and the tenth triangular numbers;
(iii) the fourteenth and the fifteenth triangular numbers;
(iv) the seventh and the eighth triangular numbers.​

Answer 1

Answer:

OPTION NUMBER 4.....................................................................

Step-by-step explanation:

Answer 2

Write the following pairs of consecutive triangular numbers and then verify that

their sum is a square number:

(i) the fifth and the sixth triangular numbers;

(ii) the ninth and the tenth triangular numbers;

(iii) the fourteenth and the fifteenth triangular numbers;

(iv) the seventh and the eighth triangular numbers.