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If in the expansion of (1+x)^32, the coefficient of (3r+1)th term be equal to the coefficient of (r+5)th term, show that, r=7.
If in the expansion of (1+x)^32, the coefficient of (3r+1)th term be equal to the coefficient of (r+5)th term, show that, r=7.

```
3 years ago

Arun
25768 Points
```							Just find 3r+1 term and r+5 termand make them equal32C3r = 32Cr+4Now use formula and use will get r= 7Hope it helps
```
3 years ago
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