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| 1. |
Show 3 root 7 is an irrational no. |
| Answer» let us take on contrary that 3 root 7 is rational. then there exist two co prime numbers a and b such that 3root 7 = a/b=> root 7 = a / 7bnow LHS is an irrational no. whereas RHs is rationalthis contradiction has arised due to our wrong assumption in beginning therefore 3 root 7 is an irrational number | |