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Common difference, d = ? for the given A.P., 7, 14, 21, 28 ........ Activity :- Here t1 = 7, t2 = 14, t3 = 21, t4 = □ t2 − t1 = □ t3 – t2 = 7 t4 – t3 = □ Therefore, common difference d = □ - Algebra

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Sum

Common difference, d = ? for the given A.P., 7, 14, 21, 28 ........

Activity :- Here t1 = 7, t2 = 14, t3 = 21, t4 = `square`

t2 − t1 = `square`

t3 – t2 = 7

t4 – t3 = `square`

Therefore, common difference d = `square`

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Solution

Here t1 = 7, t2 = 14, t3 = 21, t428

t2 − t1 = 14 – 7 = 7

t3 – t2 = 7

t4 – t3 = 28 – 21 = 7

Therefore, common difference d = 7

Concept: Arithmetic Progression
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