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The 11th term of an AP is 16 and the 21st term of an AP is 29.find the 16th term of this AP. |
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Answer» ong>ANSWER: a₁₁ = 16 or a + 10d = 16 ..(i) a₂₁ = 29 or a + 20d = 29 ..(II) Solving Equation (i) and (ii), we GET, d=13/10 a=3 a₁₆ = a + (n-1) d a₁₆ = 3 + (16-1)13/10 a₁₆ = 3+(15)13/10 a₁₆ = 3 + 39/2 a₁₆ = 6+39/2 a₁₆ = 45/2 a₁₆ = 22.5 |
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