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Given that vecu = hati + 2hatj + 3hatk ,...

Given that `vecu = hati + 2hatj + 3hatk , vecv = 2hati + hatk + 4hatk , vecw = hati + 3hatj + 3hatk and (vecu.vecR - 15) hati + (vecc. vecR - 30) hatj + (vecw . vec- 20) veck = vec0`. Then find the greatest integer less than or equal to `|vecR|`.

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