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If 10 times the 10 term …

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If 10 times the 10 term is equal to the 15 times the 15 term , show that 25 term of AP is zerp.
  • 1 answers

Mukesh Kumar 6 years, 6 months ago

10[a+9d] = 15[a+14d] => 2[a+9d] = 3[a+14d] => 2a +18d = 3a + 42d => a + 24d = 0 => a + (25-1)d = 0 Therefore 25th term = 0
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