Question

please answer this question ​

Answer 1

Answer:

50

Step-by-step explanation:

Given AP :- 2,7,12,17,..............,

from above,

a1=2

d= a2-a1 = 7-2 = 5

an = a+(n-1)d an = a+(n-1)d

a30 = 2+(30-1)5 a20 = 2+(20-1)5

a30 = 2+29(5) a20 = 2+19(5)

a30 = 2+145 a20 = 2+95

a30 = 147 a20 = 97

a30 - a20 = 147 - 97 = 50

Answer 2

answer is 50

over here the common difference is 5

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