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प्रश्न
Tick the most appropriate answer.
How many times is a proton heavier than an electron?
- 1500
- 1800
- 1840
- none of these
उत्तर
1840
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या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
Tick the most appropriate answer.
How many times is a proton heavier than an electron?
1840