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प्रश्न
Choose the correct alternative:
The probability function of a random variable is defined as
| X = x | – 1 | – 2 | 0 | 1 | 2 |
| P(x) | k | 2k | 3k | 4k | 5k |
Then k is equal to
विकल्प
zero
`1/4`
`1/15`
one
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उत्तर
`1/15`
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