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4th term of an AP equals 2 times the 1st term. Fifth term is greater than 2 times the 4th term by 5. The 19th term is? ...
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10th term of an AP is 27, 30th is 71, find teh 20th ...
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plz balance the following equations: 1)KMnO4 + FeSO4 + H2SO4->K2SO4 +MnSO4 + +Fe2(So4)3 + H2O [ by oxidation no. method ] 2) Cr2O7 + NO2- -> Cr3+ + NO3- [by half reaction method] ...