✰ If a,b,c are in A.P, then prove that : (a –c)² = 4(b² –ac)
✰ If 7 times the 7th term of an A.P. be equal to 11 times the 11th term, show that 18th term is zero.
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✰ If 7 times the 7th term of an A.P. be equal to 11 times the 11th term, show that 18th term is zero.
Don't Spam ✘
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