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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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