Question

12, 15, 18 और 21.
(a)6
(b)8
(C)3
A​

Answer 1

Step-by-step explanation:

first l. c. m. of 12 15 18 21

answer is 3

Answer 2

Answer:

3

because the given sequences is in AP ( arithmetic progression)

Step-by-step explanation:

21-18 = 3

18-15 =3

15-12 =3

because the given sequences is in AP ( arithmetic progression)

here we can observe that the common difference is 3

so the answer is 3