Find 3 A.M.'S between 3 and 19 .

1.	Find 3 A.M.'S between 3 and 19 .
Answer» Here 3 is first term and 19 is SECOND term. If you insert 3 arithmatic means between them, 19 will become 5th term of Arithmatic Progression. T(n) = first term + (n-1)d. Where T(n) is n th term and d is the COMMON difference of an Arithmatic Progression. T(5) = T(1) + (5–1)d 19 = 3 + 4d This gives d = 4 There the sequence becomes 3, 3+4, 3+24, 3+34,19 3, 7, 11, 15, 19…..

Answer»

Here 3 is first term and 19 is SECOND term. If you insert 3 arithmatic means between them, 19 will become 5th term of Arithmatic Progression.

T(n) = first term + (n-1)d. Where T(n) is n th term and d is the COMMON difference of an Arithmatic Progression.

T(5) = T(1) + (5–1)d

19 = 3 + 4d

This gives d = 4

There the sequence becomes

3, 3+4, 3+2*4, 3+3*4,19

3, 7, 11, 15, 19…..

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Find 3 A.M.'S between 3 and 19 .

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