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Find a30 – a20 for the A.P. a, a+d, a+2d, a+3d, …… |
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Answer» We know that an = a + (n – 1)d So, a30 – a20 = (a + 29d) – (a + 19) =10d Given A.P. a, a+d, a+2d, a+3d, …… So, a30 – a20 = (a + 29d) – (a + 19d = 10d |
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