Question

The following no. a, 2a, 3a, 4a, are in A.P
Find the 5th, 6th and 7th term
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Answer 1

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Here,

${a}_{1}$ = a,

d = ${a}_{2}$- ${a}_{1}$= a

Common difference = a

Now,

${a}_{5}$ = a + 4d

= a + 4(a)

= a + 4a

= 5a.

${a}_{6}$ = a + 5d

= a + 5(a)

= a + 5a

= 6a

${a}_{7}$ = a + 6d

= a + 6(a)

= a + 6a

= 7a

So the required terms 5a, 6a and 7a.

Answer 2

this is the answer

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