In the sum for which digit does the symbol ® stand?
In the sum
Options
- a.Correct answer
2
- b.
3
- c.
4
- d.
5
Explanation
2 + 12 + 52 + 22 + 21 = 109 (which is not 122). So option (a) is wrong. For option(b) 3 + 13 + 53 + 33 + 31 = 133. So option (b) is correct.
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