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Byju's Answer
Standard XII
Mathematics
Permutation: n Different Things Taken r at a Time
57, 79, 911. ...
Question

57,79,911.1113,1315,?

A
1419
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B
1503
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C
1517
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D
1719
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Solution

The correct option is B 1517
Add 2 to the units digit and tens digit separately and then form the next number.
Hence, option 'C' is correct.
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