Question

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Answer 1

$\huge\bold\star\red{SOLUTION : }$

Given terms,

• a = - 18
• n = 10
• an = 0

To find,

• d = ?

By using the given formula..

↪ an = a + (n - 1)d

➡ 0 = - 18 + (10 - 1)d

➡ 0 = - 18 + 9d

➡ 9d = 0 + 18

➡ 9d = 18

➡ d = 18/9

➡ d = 2

$\boxed{∴ d = 2 }$

Step-by-step explanation:

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Answer 2

Answer:

d =2

Step-by-step explanation:

please see the pic for step by step explanation........ please mark as brainliest if it helps