Find the nth term and sum to n terms of the following series:2+6+12+20+____
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The third term of the sequence whose nth term is n21+1 is k.Find 9k
If p:q:r=1:2:3then 5p2+q2+r2 is equal to:
Calculate the nth term of the sequence 21+44+89+.......
Find the wrong term in sequence :8, 25, 76, 229, 688, 2055
Which one of the following is not true?
Find the wrong number in the series :
IfIn= I0π/4tannXdx then I2+ I41I3+ I51I5+ I61