Question

Hello guys

Need a help of urs

pls no spamming

answer the question above properly

Answer 1

Ax = 1st +(x-1)d

A10 = 2+(10-1)d

A"10 =7+(10-1)d

A"10-A10= 7+9d-2-9d = 5

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A21= 2+(21-1)d

A"21= 7+(21-1)d

A"21 -A21 =7+20d -2-20d= 5

Difference between first terms

7-2=5

Hence, the difference between any two corresponding terms of such AP’s is the same as the difference between their first terms.

Answer 2

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